P
Packera aurea (Golden Ragwort)
Ouachita National Forest Little Missouri River, Langley, AR
#3926 Golden Ragwort Flower Head (Mar 17, 2006) 2
Ouachita National Forest Caney Creek Wilderness, Langley, AR
#4310 Golden Ragwort Against Moss Covered Tree (Mar 28, 2007) 4
  Larger

Lake in the Hills Fen, Lake in the Hills, IL
#194 Golden Ragwort in a Fen (May 12, 2011) 3
  Larger

Packera glabella (Butterweed)
Crowley's Ridge, Jonesboro, AR
#3974 Butterweed Specimen (Apr 01, 2006) 2
  Larger

#3975 Butterweed Close Up with Beetle (Apr 01, 2006) 2
  Larger

Indiana Dunes National Lakeshore, Chesterton, IN
#2367 Butterweed Portrait (May 11, 2016) 3
  Larger

Packera obovata (Golden Groundsel, Roundleaf Ragwort)
Lost Maples State Natural Area, Vanderpool, TX
#4290 Round-leaved Ragwort Specimen (Mar 20, 2007) 3
  Larger

Packera paupercula (Balsam Ragwort)
Lake in the Hills Fen, Lake in the Hills, IL
#5648 Balsam Ragwort Specimen (Jun 14, 2018) 2
  Larger

#256 Balsam Ragwort Colony (Jun 01, 2001) 2
  Larger

Illinois Beach State Park, Zion, IL
#618 Balsam Ragwort Close-up (May 28, 2007) 2
  Larger

Packera plattensis (Prairie Groundsel)
Wichita Mountains NWR, Lawton, OK
#5960 Prairie Groundsel Close-up (Mar 30, 2012) 2
  Larger

#5959 Prairie Groundsel Specimen (Mar 29, 2012) 3
  Larger

Paeonia californica (California Peony)
Cleveland National Forest Santa Ana Mountains, San Juan Capistrano, CA
#2217 California Peony Close-up (Mar 09, 2003) 2
  Larger

Palafoxia arida (Spanish Needle)
Anza-Borrego Desert Henderson and Coyote Cyn, Borrego Springs, CA
#1410 Spanish Needles Close-up (Jan 14, 2005) 3
  Larger

Palafoxia texana (Texas Palafox)
Laguna Atascosa National Wildlife Refuge, Harlingen, TX
#2836 Texas Palafox Specimen (Dec 24, 2003) 2
Panax trifolius (Dwarf Ginseng)
Great Smoky Mountains (Kanati Fork Trail), Cherokee, NC
#6845 Dwarf Ginseng Pair (Apr 13, 2015) 3
  Larger

Pandanus tectorius (Hala, Screwpine)
Pololu Valley, Kapaau, HI
#6276 Pololu Valley Wetland from Trail (Oct 09, 2012) 3
  Larger

#4475 Pololu Valley with Hala in the Foreground (Jan 12, 2008) 3
  Larger

Pandorea jasminoides (Bower Plant)
Manuka State Park and Natural Area, Captain Cook, HI
#4501 Bower Plant Flower Close-up (Feb 06, 2008) 3
  Larger

Parkinsonia sp. (Palo Verde)
Tonto NF Superstition Wilderness Area, Apache Junction, AZ
#3525 Brittlebush, Palo Verde, Saguaros with Mountains Behind (Mar 25, 2005) 4
  Larger

Kofa National Wildlife Refuge, Quartzsite, AZ
#3500 Brittlebush and Palo Verde in Tunnel Springs Canyon (Mar 20, 2005) 2
  Larger

#1550 Field of Scorpion Weed in a Desert Landscape (Mar 15, 2017) 4
  Larger

Parnassia glauca (Grass of Parnassus)
Lake in the Hills Fen, Lake in the Hills, IL
#5303 Fen Flora Microcosm (Sep 04, 2016) 3
  Larger

#365 Grass of Parnassus Colony (Aug 26, 2015) 2
  Larger

#374 Flat-topped Goldenrod with Grass of Parnassus (Sep 01, 1998) 2
  Larger

#402 Wildflowers in Late Summer Seep (Sep 04, 2016) 3
  Larger

#563 Fen Grass of Parnassus with Ladybird Beetle (Sep 15, 2014) 3
  Larger

#367 Grass of Parnassus Close Up (Aug 26, 2006) 3
  Larger

Parnassia palustris (Alaska Grass of Parnassus)
Denali National Park -- Savage River Area, Healy, AK
#5113 Grass of Parnassus in Rocky Soil (Jul 05, 2009) 3
  Larger

Parthenium integrifolium (Wild Quinine)
Lake in the Hills Fen, Lake in the Hills, IL
#5637 Wild Quinine Close Up (Jun 10, 2018) 3
  Larger

#5636 Wild Quinine Colony (Jun 10, 2018) 3
  Larger

Nachusa Grasslands, Nachusa, IL
#1384 Compass Plant in a Bed of Wild Quinine (Jul 06, 2011) 3
  Larger

Parthenocissus quinquefolia (Virginia Creeper)
Lake in the Hills Fen, Lake in the Hills, IL
#435 Virginia Creeper in Fruit on a Fence (Sep 17, 2010) 3
  Larger

Starved Rock State Park, Ottawa, IL
#1308 Virginia Creeper Hanging from Canyon Wall (Sep 28, 2011) 3
  Larger

Volo Bog, Volo, IL
#4587 Virginia Creeper in Fall Color in a Walnut Tree (Oct 03, 2008) 4
  Larger

Perrot State Park, Trempealeau, WI
#1793 Poison Ivy and Virginia Creeper Side-by-Side (Aug 22, 2016) 2
  Larger

#291 Rock Polypody and Virginia Creeper Share a Cliff Face (Aug 22, 2016) 3
  Larger

Pedicularis bracteosa (Towering Lousewort)
Mt. Rainier National Park Paradise Area, Ashford, WA
#6822 Towering Lousewort Close-up (Jul 31, 2014) 4
  Larger

Mt. Rainier National Park Natches Pk Loop Trail, White River Entrance, WA
#6798 Towering Lousewort Specimen (Jul 29, 2014) 3
  Larger

Pedicularis canadensis (Wood Betony)
Buffalo National River -- Lost Valley, Ponca, AR
#4350 Wood Betony with Red Flowers (Apr 04, 2007) 4
  Larger

Shawnee NF -- Bell Smith Springs, Eddyville, IL
#1563 Wood Betony Specimen (Apr 29, 2014) 3
  Larger

Great Smoky Mountains (Kanati Fork Trail), Cherokee, NC
#6850 Wood Betony Pair (Apr 13, 2015) 3
  Larger

#6851 Wood Betony Colony (Apr 13, 2015) 3
  Larger

Great Smoky Mountains (Porters Creek Trail), Gatlinburg, TN
#1029 Wood Betony in Seed (May 03, 2014) 2
Peninsula State Park, Fish Creek, WI
#5618 Large-Flowered Trillium with Wood Betony (May 22, 2018) 3
  Larger

Chiwaukee Prairie SNA, Pleasant Prairie, WI
#2429 Wood Betony Close-up (May 13, 2007) 4
  Larger

Pedicularis capitata (Capitate Lousewort)
Denali National Park -- Thoro Pass Ranger Hike, Healy, AK
#5165 Capitate Lousewort Specimen (Jul 10, 2009) 3
  Larger

Pedicularis contorta (Coiled Lousewort)
Mt. Harrison Research Natural Area, Albion, ID
#6708 Christ's Paintbrush with a Mixture of Other Wildflowers (Jul 18, 2014) 3
  Larger

Hells Canyon NRA Seven Devils Recreation Site, Riggins, ID
#6686 Coiled Lousewort Specimen (Jul 10, 2014) 3
  Larger

#6685 Coiled Lousewort Close Up (Jul 10, 2014) 3
  Larger

Pedicularis densiflora (Indian Warrior)
Mendocino National Forest -- Lake Pillsbury, Potter Valley, CA
#4767 Indian Warrior Specimen (May 09, 2009) 3
  Larger

Pedicularis groenlandica (Elephanthead Lousewort)
Anthony Lake Recreation Area, Baker City, OR
#3170 Elephanthead Lousewort and Shootingstars in a Grassy Meadow (Jul 13, 2014) 3
  Larger

#6695 Wildflowers in an Alpine Meadow (Jul 13, 2014) 3
  Larger

#6694 Elephanthead Lousewort Close-up (Jul 13, 2014) 3
  Larger

Pedicularis labradorica (Labrador Lousewort)
Hatcher Pass, Palmer, AK
#5051 Labrador Lousewort Specimen (Jun 26, 2009) 3
  Larger

Pedicularis lanata (Woolly Lousewort)
Arctic Valley, Anchorage, AK
#5189 Woolly Lousewort Specimen (Jun 27, 2009) 3
  Larger

Pedicularis lanceolata (Fen Betony)
Lake in the Hills Fen, Lake in the Hills, IL
#369 Fen Betony in Context (Aug 09, 2007) 3
  Larger

#370 Fen Betony Close-up (Aug 09, 2007) 3
  Larger

#5685 Fen Betony Specimen (Aug 12, 2018) 3
  Larger

Pedicularis ornithorhyncha (Bird's-Beak Lousewort)
Mt. Rainier National Park Paradise Area, Ashford, WA
#6835 Bird's Beak Lousewort Specimen (Jul 31, 2014) 4
  Larger

Pedicularis racemosa (Sickletop Lousewort)
Olympic National Park -- Obstruction Point Road, Port Angeles, WA
#6553 Sickletop Lousewort Close-up (Jul 24, 2014) 3
  Larger

Pedicularis sudetica (Sudetic Lousewort)
Denali National Park -- Thoro Pass Ranger Hike, Healy, AK
#5152 Sudetic Lousewort Specimen (Jul 10, 2009) 3
  Larger

Pedicularis verticillata (Whorled Leaf Lousewort)
Denali National Park -- Savage River Area, Healy, AK
#5114 Whorled Leaf Lousewort Close-up (Jul 05, 2009) 3
  Larger

Penstemon attenuatus (Taper-Leaved Penstemon)
Mores Mountain in Shafer Butte Recreation Area, Boise, ID
#6363 Taper-Leaved Penstemon Close-up (Aug 09, 2013) 3
  Larger

Penstemon centranthifolius (Scarlet Bugler)
Anza-Borrego Desert, Borrego Springs, CA
#3011 Scarlet Bugler (Apr 13, 2004) 2
  Larger

#3012 Scarlet Bugler Close-up (Apr 13, 2004) 2
Penstemon deustus (Scabland Penstemon)
Hells Canyon NRA, Joseph, OR
#6190 Scabland Penstemon Specimen (May 12, 2012) 2
  Larger

#6191 Scabland Penstemon Close-up (May 12, 2012) 3
  Larger

Penstemon digitalis (Foxglove Beard-tongue)
Lake in the Hills Fen, Lake in the Hills, IL
#5644 Foxglove Beard Tongue Specimen (Jun 14, 2018) 3
  Larger

#5645 Foxglove Beard Tongue Close Up (Jun 14, 2018) 3
  Larger

Nachusa Grasslands, Nachusa, IL
#624 Foxglove Beard Tongue in Big Bluestem Grass (Jun 20, 2008) 4
  Larger

Deer Grove Forest Preserve, Palatine, IL
#2768 Foxglove Beard Tongue Close-up (Jun 10, 2016) 3
  Larger

Penstemon eatonii (Eaton's Penstemon, Firecracker Penstemon)
Kofa National Wildlife Refuge, Quartzsite, AZ
#3509 Eaton's Penstemon Specimen (Mar 21, 2005) 3
  Larger

Zion NP, Springdale, UT
#1837 Eaton's Penstemon Specimen (Apr 26, 2012) 2
  Larger

Penstemon fruticosus (Bush Penstemon, Shrubby Penstemon)
Hells Canyon NRA Seven Devils Recreation Site, Riggins, ID
#6688 Alpine Golden Buckwheat and Shrubby Penstemon in Context (Jul 10, 2014) 3
  Larger

#6693 Alpine Wildflowers on a Rocky Outcrop (Jul 10, 2014) 3
  Larger

#6687 Shrubby Penstemon Specimen (Jul 10, 2014) 3
  Larger

Penstemon gracilis (Lilac Penstemon, Slender Penstemon)
Theodore Roosevelt National Park, Medora, ND
#431 Lilac Penstemon Close-up in the Rain (Jun 28, 2014) 3
  Larger

Penstemon hirsutus (Hairy Beardtongue, Hairy Penstemon)
Trout Park Nature Preserve, Elgin, IL
#5422 Hairy Penstemon Flowers Close-up (May 30, 2017) 2
  Larger

Thomson-Fulton Sand Prairie, Fulton, IL
#2524 Hairy Penstemon Closeup (May 19, 2016) 3
  Larger

Penstemon humilis (Low Beardtongue)
Zion NP, Springdale, UT
#6197 Low Beardtongue Specimen (Apr 26, 2012) 3
  Larger

Penstemon pallidus (Pale Beard-tongue)
Lake in the Hills Fen, Lake in the Hills, IL
#303 Pale Beard Tongue (Jul 20, 1998) 2
  Larger

Penstemon parryi (Parry Penstemon)
Boyce Thompson Arboretum State Park, Superior, AZ
#1577 Parry Penstemon Close-up (Mar 28, 2011) 2
  Larger

Penstemon perpulcher (Minidoka Beardtongue)
Mores Mountain in Shafer Butte Recreation Area, Boise, ID
#6661 Minidoka Beardtongue Close-up (Jul 07, 2014) 2
  Larger

Penstemon procerus (Littleflower Penstemon)
Payette NF, Bear Basin, McCall, ID
#457 Littleflower Penstemon with a Bleached Log (Jul 09, 2014) 3
  Larger

#6666 Wildflower Meadow at the Forest Edge (Jul 09, 2014) 3
  Larger

#6674 Elk Thistle Looms Above Small-Flower Penstemon (Jul 09, 2014) 3
  Larger

Hells Canyon NRA Seven Devils Recreation Site, Riggins, ID
#6692 Wildflowers in a Burned Forest at Heaven's Gate (Jul 10, 2014) 3
  Larger

#472 Whitebark Pine on the Edge (Jul 10, 2014) 3
  Larger

Gallatin NF -- Red Canyon, West Yellowstone, MT
#6653 Littleflower Penstemon Close-up (Jul 02, 2014) 3
  Larger

Olympic National Park -- Lillian Ridge Trail, Port Angeles, WA
#6768 Littleflower Penstemon Towers Over Pacific Stonecrop (Jul 25, 2014) 3
  Larger

Penstemon procerus var. tolmiei (Tolmie's Penstemon)
Mt. Rainier National Park Paradise Area, Ashford, WA
#6834 Tolmie's Penstemon -- White Color Phase (Jul 31, 2014) 3
  Larger

Olympic National Park -- Obstruction Point Road, Port Angeles, WA
#6741 Tolmie's Penstemon Specimen (Jul 24, 2014) 3
  Larger

Penstemon pseudospectabilis (Desert Penstemon)
Kofa National Wildlife Refuge, Quartzsite, AZ
#3498 Desert Penstemon Flower Spike (Mar 20, 2005) 3
  Larger

#3503 Penstemon in a Desert Wash (Mar 21, 2005) 3
  Larger

#3504 High-Desert Penstemon Specimen (Mar 21, 2005) 3
  Larger

#3497 Desert Penstemon and Boulders (Mar 20, 2005) 3
  Larger

Penstemon rydbergii (Meadow Penstemon)
Snake River Birds of Prey Conservation Area, Kuna, ID
#6066 Meadow Penstemon Specimen (May 03, 2012) 3
  Larger

#6067 Meadow Penstemon Close-up (May 03, 2012) 3
  Larger

Penstemon sp. (Penstemon)
Medicine Bow National Forest Snowy Mountains, Laramie, WY
#2931 Penstemon (Jun 04, 2004) 2
  Larger

Penstemon utahensis (Utah Penstemon)
Zion NP, Springdale, UT
#1838 Utah Penstemon in Context (Apr 23, 2012) 3
  Larger

Penthorum sedoides (Ditch Stonecrop)
Volo Bog, Volo, IL
#4583 Ditch Stonecrop in Seed (Aug 09, 2016) 3
  Larger

Perityle emoryi (Emory's Rock-Daisy)
Anza-Borrego Desert, Borrego Springs, CA
#1434 Emory's Rock Daisy (Mar 15, 1998) 2
  Larger

#3333 Emory's Rock-Daisy Specimen (Feb 01, 2005) 2
  Larger

Anza-Borrego Desert Palm Canyon, Borrego Springs, CA
#3361 Phacelia and Rock Daisies (Feb 14, 2005) 3
  Larger

Phacelia bipinnatifida (Fernleaf Phacelia, Forest Phacelia, Purple Phacelia)
Shawnee NF -- Rim Rock Trail, Elizabethtown, IL
#6562 Forest Phacelia Specimen (Apr 30, 2014) 3
  Larger

Shawnee NF -- Burden Falls Wilderness, Harrisburg, IL
#1101 Forest Phacelia Close-up (Apr 29, 2014) 3
  Larger

#6563 Forest Phacelia Colony (Apr 25, 2014) 2
  Larger

Starved Rock State Park, Ottawa, IL
#6588 Forest Phacelia in Front of Canyon Wall (May 15, 2014) 3
  Larger

Phacelia campanularia (Desertbells)
Joshua Tree National Park, Twentynine Palms, CA
#3446 A Mass of Desertbells (Mar 22, 2017) 4
  Larger

#3447 Desertbells in a Wash with Old Log (Mar 21, 2017) 4
  Larger

#3448 Desert Bells Growing from Crevice (Mar 15, 2005) 3
  Larger

#3411 Desertbells Close-up (Feb 17, 2005) 4
  Larger

#3410 Desertbells Specimen (Mar 21, 2017) 4
  Larger

Phacelia cicutaria var. hispida (Caterpillar Phacelia)
Anza-Borrego Desert Palm Canyon, Borrego Springs, CA
#3361 Phacelia and Rock Daisies (Feb 14, 2005) 3
  Larger

#3363 Caterpillar Phacelia Close-up (Feb 14, 2005) 3
  Larger

Phacelia coerulea (Skyblue Phacelia)
Usery Regional Park, Mesa, AZ
#4550 Skyblue Phacelia Specimen (Mar 03, 2008) 4
  Larger

Phacelia crenulata (Cleftleaf Phacelia)
Kofa National Wildlife Refuge, Quartzsite, AZ
#3301 Cleftleaf Phacelia Portrait (Mar 16, 2017) 4
  Larger

#1550 Field of Scorpion Weed in a Desert Landscape (Mar 15, 2017) 4
  Larger

Anza-Borrego Desert, Borrego Springs, CA
#3364 Cleftleaf Phacelia Close-up (Feb 15, 2005) 3
  Larger

Anza-Borrego Desert Palm Canyon, Borrego Springs, CA
#3362 Phacelia, Whispering Bells, and Desert Gold Poppies (Feb 15, 2005) 3
  Larger

Phacelia cryptantha (Hiddenflower Phacelia)
Death Valley NP Panamint Mountains, Panamint Springs, CA
#2986 Hidden-flower Phacelia Close-up (Mar 27, 2004) 2
Phacelia distans (Lace-Leaf Phacelia)
Usery Regional Park, Mesa, AZ
#4551 Common Phacelia Close-up (Mar 03, 2008) 4
  Larger

Anza-Borrego Desert, Borrego Springs, CA
#1444 Common Blue Phacelia Close-up (Jan 16, 2005) 2
  Larger

#3330 Chuparosa and Common Phacelia with Brittlebush Behind (Feb 01, 2005) 4
  Larger

Anza-Borrego Desert Cool Canyon, Borrego Springs, CA
#3417 Henne's Variable Checkerspot Nectaring on Blue Phacelia (Mar 11, 2005) 3
  Larger

Anza-Borrego Desert Palm Canyon, Borrego Springs, CA
#3360 Common Phacelia and Whispering Bells (Feb 14, 2005) 3
  Larger

Anza-Borrego Desert Piedras Grandes, Ocotillo, CA
#1461 Desert Chicory with Common Blue Phacelia as Background (Jan 30, 2005) 4
  Larger

Wilson Valley Road, Temecula, CA
#3580 Southern Chinese Houses with Common Blue Phacelia (Apr 11, 2005) 4
  Larger

#2231 Hillside in Bloom (Mar 19, 2017) 4
  Larger

#2246 Wildflower Mish Mash -- Botanists Delight (Mar 19, 2017) 4
  Larger

Phacelia fimbriata (Fringed Phacelia)
Great Smoky Mountains (Porters Creek Trail), Gatlinburg, TN
#6855 Sweet White Trillium Towers over Fringed Phacelia (Apr 10, 2015) 3
  Larger

#1062 Fringed Phacelia Carpets the Ground (Apr 10, 2015) 3
  Larger

#1061 Fringed Phacelia and Unknown Bee (Apr 10, 2015) 3
  Larger

Great Smoky Mountains (US 441 to Newfound Gap), Gatlinburg, TN
#6860 Fringed Phacelia Under a Sugar Maple (Apr 12, 2015) 3
  Larger

Phacelia fremontii (Fremont's Phacelia)
Mount Charleston, Las Vegas, NV
#1523 Fremont's Phacelia Close-up (Apr 13, 2009) 3
  Larger

Phacelia minor (Wild Canterbury Bells)
Anza-Borrego Desert, Borrego Springs, CA
#3366 Nature's Rock Garden Display (Feb 13, 2005) 2
  Larger

Anza-Borrego Desert Cool Canyon, Borrego Springs, CA
#2198 Canterbury Bells against Colorful Rock (Mar 15, 2003) 2
  Larger

#3423 Goldeneye, Phacelia, and Popcorn Flowers (Mar 11, 2005) 2
Caspers Wilderness Park, San Juan Capistrano, CA
#5403 Canterbury Bell Portrait (Mar 20, 2017) 4
  Larger

#2232 Poppies, Canterbury Bells and Chia (Mar 21, 2003) 4
  Larger

Wilson Valley Road, Temecula, CA
#1391 A Column of Canterbury Bells (Mar 19, 2017) 4
  Larger

#2246 Wildflower Mish Mash -- Botanists Delight (Mar 19, 2017) 4
  Larger

#3442 Canterbury Bells with Granite Boulder (Mar 09, 2005) 4
  Larger

#3443 Unusually Large Canterbury Bells Close-up (Mar 09, 2005) 4
  Larger

Phacelia parryi (Parry's Phacelia)
Anza-Borrego Desert Cool Canyon, Borrego Springs, CA
#2189 Suncups, Popcorn Flower, and Parry's Phacelia (Mar 15, 2003) 2
Whiting Wilderness Park, Lake Forest, CA
#2755 Parry's Phacelia (Mar 10, 2003) 2
  Larger

#2754 Parry's Phacelia and Habitat (Mar 10, 2003) 2
Anza-Borrego Desert Piedras Grandes, Ocotillo, CA
#3300 Specimen of Parry's Phacelia (Jan 30, 2005) 2
  Larger

Phacelia purshii (Miami Mist)
Shawnee NF -- La Rue Pine Hills, Jonesboro, IL
#4339 Miami Mist Specimen (Mar 09, 2007) 2
  Larger

Johnson's Shut-Ins State Park, Graniteville, MO
#3646 Miami Mist Close-up (Apr 28, 2005) 4
  Larger

Phacelia sericea (Silky Phacelia)
Hells Canyon NRA Seven Devils Recreation Site, Riggins, ID
#472 Whitebark Pine on the Edge (Jul 10, 2014) 3
  Larger

#6692 Wildflowers in a Burned Forest at Heaven's Gate (Jul 10, 2014) 3
  Larger

Gallatin NF -- Red Canyon, West Yellowstone, MT
#6842 Silky Phacelia Close-up (Jul 02, 2014) 3
  Larger

#6658 Silky Phacelia Specimen (Jul 02, 2014) 3
  Larger

Phalaenopsis sp. (Moth Orchid)
South Kona Coast of the Big Island, Captain Cook, HI
#6218 Moth Orchid and Buds (Sep 28, 2012) 3
  Larger

Phegopteris connectilis (Long Beech Fern)
Indian Pond, Orford, NH
#5798 Long Beech Fern Specimen (Jun 11, 2011) 4
  Larger

Phegopteris hexagonoptera (Broad Beech Fern)
Starved Rock State Park, Ottawa, IL
#5349 Broad Beech Fern Frond (Oct 18, 2016) 2
  Larger

Philadelphus lewisii (Wild Mock Orange, Syringa)
Payette River Along Banks Lowman Highway, Banks, ID
#559 Wild Mock Orange (Syringa) on the Payette River Shore (Jul 09, 2014) 3
  Larger

Phlox adsurgens (Northern Phlox)
Rogue River, Prospect, OR
#3101 Northern Phlox (Jun 14, 2004) 2
  Larger

Phlox austromontana (Mountain Phlox)
Hells Canyon NRA Seven Devils Recreation Site, Riggins, ID
#459 Mountain Phlox Colony (Jul 10, 2014) 3
  Larger

Phlox bifida (Cleft Sand Phlox)
Giant City State Park, Carbondale, IL
#4007 Cleft Phlox Close Up (Apr 09, 2006) 2
  Larger

#5745 Cleft Phlox in Context (Apr 23, 2010) 3
  Larger

Johnson's Shut-Ins State Park, Graniteville, MO
#3653 A Six-petaled Cleft Sand Phlox (Apr 28, 2005) 2
Phlox diffusa (Spreading Phlox)
Mt. Rainier National Park Paradise Area, Ashford, WA
#6824 Spreading Phlox -- Pink Color Phase (Jul 31, 2014) 4
  Larger

#6823 Spreading Phlox on Red Boulder (Jul 31, 2014) 4
  Larger

Phlox divaricata (Blue Phlox)
Ouachita National Forest Little Missouri River, Langley, AR
#3923 Blue Phlox -- Lavender Color (Mar 16, 2006) 4
  Larger

Buffalo National River -- Lost Valley, Ponca, AR
#3946 Blue Phlox Flowers and Buds (Mar 27, 2006) 4
  Larger

Giant City State Park, Carbondale, IL
#5741 Blue Phlox Decorated with Fallen Oak Flowers (Apr 23, 2010) 3
  Larger

Johnson's Mound Forest Preserve, Elburn, IL
#2359 Blue Phlox Dot a Woodland Hillside (May 06, 2016) 3
  Larger

David Schwaegler's Home, Lake in the Hills, IL
#1191 Blue Phlox Blossoms (May 04, 2017) 3
  Larger

Mississippi Palisades S.P., Savanna, IL
#3072 Wild Sweet Williams with White Flowers (Apr 30, 2005) 4
  Larger

#2354 Blue Phlox and Maidenhair (May 23, 2003) 3
  Larger

Johnson's Shut-Ins State Park, Graniteville, MO
#3647 Wild Sweet William Close-up (Apr 28, 2005) 2
Great Smoky Mountains (School House Gap Tr.), Gatlinburg, TN
#1075 Meadow of Blue Phlox (Apr 26, 2010) 3
  Larger

#1076 Path through the Wildflowers (Apr 26, 2010) 3
  Larger

Great Smoky Mountains (Porters Creek Trail), Gatlinburg, TN
#6854 Blue Phlox Pink Color Form (Apr 10, 2015) 3
  Larger

Phlox glaberrima (Marsh Phlox)
Huntley, Union, Marengo (H.U.M.) R.R. Prairies, Union, IL
#3687 Marsh Phlox Specimen (Jul 04, 2005) 2
Illinois Beach State Park, Zion, IL
#672 Marsh Phlox with Morning Dew (Jun 30, 2007) 3
  Larger

#538 Black-Eyed Susans and Marsh Phlox in a Willow Thicket (Jun 30, 2007) 2
  Larger

Chiwaukee Prairie SNA, Pleasant Prairie, WI
#703 Marsh Phlox Close Up (Jun 20, 1998) 4
  Larger

Phlox jonesii (Zion Phlox)
Zion NP Observation Point Trail, Springdale, UT
#6198 Zion Phlox Specimen (Apr 26, 2012) 3
  Larger

Phlox longifolia (Long-leaved Phlox)
Devil's Canyon (BLM), Fruita, CO
#1856 Long-leaved Phlox Specimen (Apr 24, 2005) 3
  Larger

US 95 Near Midvale Hill, Midvale, ID
#6073 Long-Leaved Phlox Close-up (May 04, 2012) 3
  Larger

Phlox multiflora (Flowery Phlox, Rocky Mountain Phlox)
Gallatin NF -- Red Canyon, West Yellowstone, MT
#6657 Rocky Mountain Phlox Specimen (Jul 02, 2014) 3
  Larger

Phlox paniculata (Garden Phlox)
Lake in the Hills Fen, Lake in the Hills, IL
#5304 Garden Phlox Covered with Dew (Sep 04, 2016) 3
  Larger

Phlox pilosa (Prairie Phlox)
Lake in the Hills Fen, Lake in the Hills, IL
#203 Prairie Phlox Specimen (Jun 05, 2014) 2
  Larger

#204 Prairie Phlox Close-up (Jun 05, 2014) 3
  Larger

Illinois Beach State Park, Zion, IL
#5437 Meadow Anemone with Prairie Phlox Background (Jun 09, 2017) 3
  Larger

#648 Prairie Phlox Close Up (May 28, 2007) 4
  Larger

Taum Sauk Mountain State Park, Ironton, MO
#3668 Downy Phlox Close-up (Apr 29, 2005) 3
  Larger

Phlox stolonifera (Creeping Phlox)
Great Smoky Mountains (US 441 to Newfound Gap), Gatlinburg, TN
#1064 Creeping Phlox Close-up (Apr 26, 2001) 2
  Larger

Pholistoma auritum var. arizonicum (Arizona Fiesta Flower)
Lost Dutchman State Park, Apache Junction, AZ
#3390 Arizona Fiesta Flower (Feb 21, 2005) 2
Pholistoma auritum var. auritum (Blue Fiesta-flower)
Sequoia National Forest -- Kern River Canyon, Lake Isabella, CA
#4690 Fiesta Flower Close-up (Apr 17, 2009) 4
  Larger

#4689 Fiesta Flower on Mass (Apr 17, 2009) 4
  Larger

Trestles Beach, San Clemente, CA
#2254 Fiesta-flower and Hover Fly (Mar 28, 2003) 2
  Larger

#2253 Mass of Fiesta-flowers (Mar 28, 2003) 2
Pholistoma membranaceum (White Fiesta Flower)
Anza-Borrego Desert Palm Canyon, Borrego Springs, CA
#3365 White Fiesta Flower (Feb 14, 2005) 2
Phoradendron californicum (California Mesquite Mistletoe)
Tonto NF Hieroglyphics Canyon Trail, Gold Canyon, AZ
#1967 Mistletoe in Fruit (Feb 21, 2010) 4
  Larger

Photinia melanocarpa (Black Chokeberry)
Indian Pond, Orford, NH
#2086 Black Chokeberry Blossoms (Jun 08, 2011) 2
  Larger

Phragmites australis (Common Reed)
Big Bend National Park Rio Grande Vlg Area, Alpine, TX
#4220 Stems of Common Reed (Mar 04, 2007) 3
  Larger

Phyla lanceolata (Fog Fruit)
Braidwood Dunes, Braidwood, IL
#1264 Fog Fruit (Aug 25, 2001) 2
Phyllodoce empetriformis (Pink Mountainheath)
Anthony Lake Recreation Area, Baker City, OR
#6701 Pink Mountainheath Specimen (Jul 13, 2014) 3
  Larger

Mt. Rainier National Park Paradise Area, Ashford, WA
#6324 Red, White, and Blue Meadow (Aug 14, 2013) 4
  Larger

#6329 Pink Mountainheath Colony (Aug 14, 2013) 4
  Larger

#6332 Pink Mountainheath Close-up (Aug 14, 2013) 4
  Larger

Olympic National Park -- Lillian Ridge Trail, Port Angeles, WA
#6779 Heath Flowers in a Meadow with the Olympic Mountains Behind (Jul 25, 2014) 3
  Larger

#6760 Pink Mountain-Heather in a Boulder Strewn Meadow (Jul 25, 2014) 3
  Larger

Mt. Rainier National Park Natches Pk Loop Trail, White River Entrance, WA
#6803 Wildflowers on a Sunny Slope (Jul 29, 2014) 3
  Larger

#6797 Island with Pink Mountainheath in Tipsoo Lake (Jul 29, 2014) 4
  Larger

Physalis crassifolia (Thick-leaved Ground Cherry)
Anza-Borrego Desert, Borrego Springs, CA
#1416 Thick-leaved Ground Cherry Close-up (Jan 15, 2005) 2
  Larger

Death Valley NP Titus Canyon (Amagorsa Mtns.), Inyo County, CA
#3464 Thick-leaved Ground Cherry in Niche (Mar 16, 2005) 2
  Larger

#3465 Thick-leaved Ground Cherry Specimen (Mar 16, 2005) 4
  Larger

Anza-Borrego Desert Piedras Grandes, Ocotillo, CA
#1408 Large Specimen of Thick-Leaved Ground Cherry (Jan 14, 2005) 2
  Larger

Physalis longifolia var. subglabrata (Tall Ground Cherry)
Lake in the Hills Fen, Lake in the Hills, IL
#344 Tall Ground Cherry Specimen (Jul 25, 1998) 2
  Larger

Physocarpus opulifolius (Ninebark)
Keweenaw Peninsula, Baraga and Ontonagon, MI
#958 Ninebark on Comglomerate Rock (Jul 24, 2017) 3
  Larger

#5491 Conglomerate Rock on the Lake Superior Shore (Jul 24, 2017) 3
  Larger

Physostegia virginiana (Obedient Plant)
Dixie Briggs Fromm, Algonquin, IL
#1216 Obedient Plant Close-up (Aug 24, 2011) 3
  Larger

Lake in the Hills Fen, Lake in the Hills, IL
#5548 Obedient Plant Flowers and Seeds (Sep 11, 2017) 3
  Larger

#388 Obedient Plant Flowers Supported by Big Bluestem (Aug 26, 2014) 2
  Larger

West Chicago Prairie Forest Preserve, West Chicago, IL
#1349 Prairie Obedient Plant White Color Form (Aug 22, 2015) 3
  Larger

Phytolacca americana (Pokeweed)
Lake in the Hills Fen, Lake in the Hills, IL
#417 Pokeweed in Fruit (Aug 01, 1998) 3
  Larger

#97 Pokeweed in Flower (Jul 08, 2006) 2
  Larger

Red River Gorge Tunnel Ridge Road, Stanton, KY
#5850 Pokeweed in Fall Color (Oct 21, 2011) 3
  Larger

Picea engelmannii (Engelmann Spruce)
Dixie National Forest Along UT 143, Panguitch, UT
#6506 Aspen, Spruce, Sage - Layers of Fall Color (Sep 24, 2013) 4
  Larger

#6507 Aspen and Spruce Portrait (Sep 24, 2013) 4
  Larger

Picea glauca (White Spruce)
Keweenaw Peninsula, Baraga and Ontonagon, MI
#5494 Spruce Seedling on Lake Superior Conglomerate (Jul 24, 2017) 3
  Larger

Brockway Mountain Drive, Copper Harbor, MI
#5563 Red Oak in Fall Color with White Spruce (Oct 13, 2017) 3
  Larger

Picea mariana (Black Spruce)
Nestoria Herman Road, L'Anse, MI
#5573 Leatherleaf Bog in Autumn Color (Oct 15, 2017) 3
  Larger

Pilea pumila (Clearweed)
Volo Bog, Volo, IL
#4589 Clearweed Specimen (Oct 03, 2008) 2
  Larger

Pinguicula vulgaris (Common Butterwort)
Tongass National Forest -- Mitkof Island, Petersburg, AK
#4972 Common Butterwort Specimen (Jun 16, 2009) 3
  Larger

#4973 Common Butterwort Flower Close-up (Jun 16, 2009) 2
  Larger

Pinus albicaulis (Whitebark Pine)
Hells Canyon NRA Seven Devils Recreation Site, Riggins, ID
#472 Whitebark Pine on the Edge (Jul 10, 2014) 3
  Larger

Pinus banksiana (Jack Pine)
Sleeping Bear Dunes National Lakeshore, Empire, MI
#2188 Jack Pine Needles and Cones (Oct 12, 2015) 3
  Larger

#2187 Jack Pine on a Dune (Oct 12, 2015) 3
  Larger

Pinus contorta var. contorta (Beach Pine)
Butze Rapids, Prince Rupert, BC
#4922 Beach Pine Close Up (Jun 08, 2009) 3
  Larger

#4921 Bog with Beach Pine and Labrador Tea (Jun 08, 2009) 3
  Larger

Pinus contorta var. latifolia (Lodgepole Pine)
Yellowstone US 89 Mammoth to Madison Junction, Mammoth, WY
#6122 Old Stump and Young Pine (May 17, 2012) 3
  Larger

#6120 New Forest Springs from the Old (May 17, 2012) 3
  Larger

Pinus edulis (Two-Needle Pinyon Pine)
Grand Canyon West Rim Drive, Grand Canyon, AZ
#1887 Hermit Road Greenway View (Apr 07, 2009) 4
  Larger

#1884 Pine on the Edge of a Slippery Slope (Apr 12, 2012) 3
  Larger

Pinus elliottii (Slash Pine)
Francis Beidler Forest, Harleyville, SC
#5888 Sapsucker Holes in Slash Pine (Oct 31, 2011) 3
  Larger

Pinus longaeva (Great Basin Bristlecone Pine)
Bryce Canyon National Park, Escalante, UT
#6523 Bristlecone Pine on the Edge of Bryce Canyon (Sep 27, 2013) 3
  Larger

Dixie National Forest Along UT 143, Panguitch, UT
#6512 Bristlecone Pine Specimen (Sep 24, 2013) 4
  Larger

#6511 Bristlecone Pine Mature Cone (Sep 24, 2013) 4
  Larger

#6510 Bristlecone Pine Young Cones (Sep 24, 2013) 4
  Larger

#6513 Twisted Bristlecone Pine in the Twisted Forest (Sep 24, 2013) 4
  Larger

#6514 Bristlecone Pine in the Twisted Forest (Sep 24, 2013) 4
  Larger

Pinus palustris (Longleaf Pine)
Okefenokee East Entrance, Folkston, GA
#5903 Longleaf Pine Woodland (Nov 03, 2011) 3
  Larger

Pinus ponderosa (Ponderosa Pine)
Zion NP East of the Tunnel, Springdale, UT
#5264 Ponderosa Pine On Sandstone (Mar 13, 2010) 4
  Larger

Pinus sabiniana (Gray Pine)
Pinnacles National Monument, Soledad, CA
#2689 Gray Pines and Pinnacles (Dec 24, 2002) 2
  Larger

Pinus strobus (White Pine)
Starved Rock State Park, Ottawa, IL
#5357 Peering Through the Pines (Nov 01, 2016) 3
  Larger

Sleeping Bear Dunes National Lakeshore, Empire, MI
#2175 Red Maple in a Grove of White Pine (Oct 13, 2015) 3
  Larger

Baraga County, L'Anse, MI
#1979 5. Descending to Sturgeon Falls -- Big Trees at the Bottom (Oct 08, 2015) 3
  Larger

#1975 2. Descending to Sturgeon Falls -- Maples with Pine Understory (Oct 08, 2015) 3
  Larger

#1969 Red Oak, Sugar Maple, White Pine Portrait (Oct 08, 2015) 3
  Larger

Porcupine Mountains - Escarpment Trail, Ontonagon, MI
#5579 Carp River Overflook (Oct 17, 2017) 3
  Larger

#5577 Quaking Aspen and White Pine Overlooking Lake of the Clouds (Oct 16, 2017) 3
  Larger

Porcupine Mountains - Presque Isle, Ontonagon, MI
#1943 Sapsucker Holes in Huge White Pine (Oct 05, 2015) 2
  Larger

Copper Falls State Park, Mellen, WI
#5334 White Pine on the Tyler Fork Shore (Oct 12, 2016) 3
  Larger

Piperia transversa (Royal Rein Orchid)
Olympic National Park -- Humes Ranch Trail, Port Angeles, WA
#6782 Royal Rein Orchid Close-up (Jul 26, 2014) 3
  Larger

Pittosporum hosmeri (Kona Cheesewood, Ho'awa)
South Kona Coast of the Big Island, Captain Cook, HI
#6262 Kona Cheesewood in Seed (Oct 13, 2012) 3
  Larger

#6261 Kona Cheesewood in Flower (Oct 13, 2012) 3
  Larger

Platanthera aquilonis (Bog Orchid. Northern)
Lake in the Hills Fen, Lake in the Hills, IL
#5640 Northern Green Orchid Close Up (Jun 11, 2018) 3
  Larger

#143 Northern Green Orchid Spike (Jun 01, 1998) 4
  Larger

#5638 Northern Green Orchid in Context (Jun 11, 2018) 3
  Larger

#5639 Northern Green Orchid Specimen (Jun 11, 2018) 2
  Larger

Mt. Rainier National Park Stevens Canyon Road, Ashford, WA
#6551 Northern Green Bog-Orchid Specimen (Aug 14, 2013) 3
  Larger

Platanthera clavellata (Club-spur Orchid)
Nicolet National Forest Bell Lake, Florence, WI
#910 Spurred Club Orchid Close-up (Jul 10, 2001) 2
Grandma Lake Wetlands SNA, Long Lake (Florence), WI
#976 Club Spur Orchid (Jul 12, 2001) 2
  Larger

Platanthera dilatata (White Bog Orchid, Tall White Rein-Orchid)
Hatcher Pass, Palmer, AK
#5030 White Bog Orchid Starting to Bloom (Jun 26, 2009) 3
  Larger

Anthony Lake Recreation Area, Baker City, OR
#6700 Tall White Rein Orchid Specimen (Jul 13, 2014) 3
  Larger

Ochoco National Forest, Prineville, OR
#3179 Tall White Rein-Orchid on Stream Bank (Jun 17, 2004) 3
  Larger

Platanthera lacera (Ragged Fringed Orchid)
Grandma Lake Wetlands SNA, Long Lake (Florence), WI
#979 Ragged Fringed Orchid Close-up (Jul 12, 2001) 2
Chiwaukee Prairie SNA, Pleasant Prairie, WI
#978 Ragged Fringed Orchid (Aug 09, 2014) 3
  Larger

Platanthera leucophaea (Prairie White Fringed Orchid)
Kane County, , IL
#4580 Prairie White Fringed Orchid Close-up (Jul 07, 2008) 2
  Larger

#4579 Prairie White Fringed Orchid Flowers (Jul 07, 2008) 3
  Larger

#4581 Prairie White Fringed Orchid Specimen (Jul 07, 2008) 2
  Larger

Platanthera stricta (Slender Bog Orchid)
Tongass National Forest -- Mitkof Island, Petersburg, AK
#4976 Slender Bog Orchid Colony (Jun 16, 2009) 3
  Larger

#4971 Slender Bog Orchid Close-up (Jun 16, 2009) 3
  Larger

#4970 Slender Bog Orchid Specimen (Jun 16, 2009) 3
  Larger

Platanus occidentalis (American Sycamore)
Starved Rock State Park, Ottawa, IL
#5378 Gold and Yelllow Floating Leaves (Oct 31, 2016) 3
  Larger

Turkey Run State Park, Marshall, IN
#6568 American Sycamore Lit by Morning Sun (May 08, 2014) 3
  Larger

Platanus racemosa (California Sycamore)
Cleveland National Forest Harding Canyon, Modjeska, CA
#1777 California Sycamore Bark Close-up (Jan 25, 2006) 4
  Larger

#1778 California Sycamores in Winter (Jan 25, 2006) 4
  Larger

Platystemon californicus (Cream Cups)
Wilson Valley Road, Temecula, CA
#3573 Cream Cups Specimen (Apr 11, 2005) 2
Pleopeltis polypodioides ssp. michauxiana (Resurrection Fern)
Ouachita National Forest Little Missouri River, Langley, AR
#3921 Resurrection Fern and Lichen (Mar 20, 2006) 4
  Larger

Pluchea sericea (Arrow-weed)
Death Valley NP Panamint Mountains, Panamint Springs, CA
#1532 Arrow-weed in Devil's Cornfield (Mar 15, 1998) 2
Plumbago auriculata (Plumbago)
South Kona Coast of the Big Island, Captain Cook, HI
#6210 Plumbago Blossoms (Sep 15, 2012) 3
  Larger

Plumeria sp. (Frangipani, Plumeria)
South Kona Coast of the Big Island, Captain Cook, HI
#6208 Pink Plumeria Blossoms (Sep 18, 2012) 3
  Larger

Podophyllum peltatum (May Apple)
Giant City State Park, Carbondale, IL
#3651 Mayapple Flower Lit by Morning Sun (May 01, 2014) 4
  Larger

Mississippi Palisades S.P., Savanna, IL
#4578 Mayapple and Ferns (May 19, 2008) 2
  Larger

#4577 Mayapple Flower Close-up (May 19, 2008) 4
  Larger

#3074 Large Colony of May Apples (Apr 22, 2004) 2
Pogonia ophioglossoides (Rose Pogonia)
Lake in the Hills Fen, Lake in the Hills, IL
#146 Rose Pogonia White Form (Jun 15, 1998) 2
#147 Rose Pogonia and Sedge (Jun 10, 2007) 2
  Larger

Volo Bog, Volo, IL
#1154 Rose Pogonia Amongst Ferns (Jun 20, 1998) 2
Beulah Bog SNA, East Troy, WI
#883 Rose Pogonia Close Up (Jun 14, 2010) 4
  Larger

#196 Rose Pogonia Pair (Jun 14, 2010) 3
  Larger

Shadow (Boot) Lake, Florence, WI
#882 Rose Pogonia Colony at the Shore (Jul 10, 2001) 2
  Larger

Polemonium acutiflorum (Tall Jacob's Ladder)
Denali National Park -- Savage River Area, Healy, AK
#5127 Tall Jacob's Ladder Specimen (Jul 06, 2009) 3
  Larger

Polemonium californicum (California Jacob's Ladder, Low Jacob's Ladder)
Olympic National Park -- Lillian Ridge Trail, Port Angeles, WA
#6759 California Jacob's Ladder Specimen (Jul 25, 2014) 3
  Larger

Polemonium foliosissimum (Leafy Jacob's Ladder, Towering Jacob's Ladder)
Wasatch-Cache NF -- Monte Cristo Scenic Drive, Ogden, UT
#6722 Leafy Jacob's Ladder White Color Phase (Jul 19, 2014) 3
  Larger

Polemonium pulcherrimum (Showy Jacob's-ladder)
Anthony Lake Recreation Area, Baker City, OR
#6705 Showy Jacob's Ladder Specimen (Jul 13, 2014) 2
  Larger

Polemonium reptans (Greek Valerian, Jacob's Ladder)
Buffalo National River -- Lost Valley, Ponca, AR
#2037 Jacob's Ladder Close-up (Apr 07, 2011) 4
  Larger

#4330 Jacob's Ladder Specimen (Apr 07, 2011) 2
  Larger

David Schwaegler's Home, Lake in the Hills, IL
#2036 Jacob's Ladder Specimen (May 10, 2014) 3
  Larger

Polygala alba (White Milkwort)
Theodore Roosevelt National Park, Medora, ND
#6634 White Milkwort Specimen (Jun 27, 2014) 4
  Larger

Polygala cruciata (Drumheads, Cross-leaved Milkwort)
Necedah NWR, Tomah, WI
#5291 Drumheads Colony (Aug 24, 2016) 3
  Larger

Polygala paucifolia (Gaywings)
The Ridges Sanctuary, Baileys Harbor, WI
#811 Gaywings in Context (Jun 06, 2005) 4
  Larger

#812 Gaywings with Multiple Flowers (Jun 06, 2005) 4
  Larger

#2098 Gaywings Close Up (Jun 10, 2002) 4
  Larger

Polygala polygama (Purple Milkwort)
Lake in the Hills Fen, Lake in the Hills, IL
#260 Purple Milkworts (Jun 20, 2001) 2
  Larger

Nachusa Grasslands, Nachusa, IL
#2155 Purple Milkwort Close-up (Jun 20, 2008) 4
  Larger

#600 Purple Milkwort Specimen (Jun 20, 2008) 2
  Larger

Spread Eagle Barrens SNA, Florence, WI
#5478 Purple Milkwort in Flower (Jul 20, 2017) 2
  Larger

Polygala rugelii (Yellow Milkwort)
Merritt Island NWR Wildlife Drive, Titusville, FL
#5937 Yellow Milkwort Specimen (Nov 08, 2011) 3
  Larger

Polygala sanguinea (Field Milkwort)
Nachusa Grasslands, Nachusa, IL
#1347 Field Milkwort Specimen (Jul 05, 2005) 2
  Larger

#1796 Field Milkwort Closeup (Sep 25, 2015) 3
  Larger

Polygala senega (Seneca Snakeroot)
Black Earth Rettenmund Prairie SNA, Black Earth, WI
#1134 Seneca Snakeroot Close-up (May 17, 2001) 2
Polygala verticillata (Whorled Milkwort)
Lake in the Hills Fen, Lake in the Hills, IL
#946 Whorled Milkwort Specimen (Aug 05, 2016) 2
  Larger

Polygonatum biflorum var. commutatum (Smooth Solomon's Seal)
David Schwaegler's Home, Lake in the Hills, IL
#328 Solomon's Seal in Flower (Jun 04, 2014) 3
  Larger

#249 Solomon's Seal with Berries in Fall Color (Oct 06, 2011) 3
  Larger

Chiwaukee Prairie SNA, Pleasant Prairie, WI
#1268 Smooth Solomon's Seal with Berries (Sep 12, 2008) 2
  Larger

#1294 Smooth Solomon's Seal and Prairie Grass (Sep 12, 2008) 2
  Larger

Polygonum alaskanum (Alaska Wild Rhubarb)
Denali National Park -- Savage River Area, Healy, AK
#5781 Alaska Wild Rhubarb Flower Stalk (Jul 06, 2010) 2
  Larger

Polygonum amphibium (Water Smartweed)
Spring Bluff Nature Preserve, Winthrop Harbor, IL
#384 Water Smartweed Specimen (Aug 21, 2015) 2
  Larger

#1685 Polygonum-fond Beetle on Polygonum Leaf (Aug 21, 2015) 2
  Larger

Polygonum bistorta (Meadow Bistort)
Mt. Rainier National Park Paradise Area, Ashford, WA
#6338 Lupine and Paintbrush in a Wet Meadow (Aug 15, 2013) 4
  Larger

#6327 Diverse Wildflowers (Aug 14, 2013) 4
  Larger

#6324 Red, White, and Blue Meadow (Aug 14, 2013) 4
  Larger

Polygonum bistorta var. plumosum (Pink Plumes)
Denali National Park -- Savage River Area, Healy, AK
#5120 Pink Plumes Specimen (Jul 06, 2009) 3
  Larger

Polygonum bistortoides (American Bistort)
Olympic National Park -- Obstruction Point Road, Port Angeles, WA
#6751 Dwarf Lupine and American Bistort Share an Alpine Meadow (Jul 24, 2014) 3
  Larger

Polygonum pensylvanicum (Pennsylvania Smartweed)
Lake in the Hills Fen, Lake in the Hills, IL
#101 Pennsylvania Smartweed Specimen (Sep 16, 2011) 2
  Larger

Polygonum persicaria (Spotted Ladysthumb)
Middleton Place, Charleston, SC
#6195 Swamp Lily with Spotted Ladysthumb (Nov 01, 2011) 3
  Larger

Polygonum viviparum (Alpine Bistort)
Hatcher Pass, Palmer, AK
#5035 Alpine Bistort Close-up (Jun 26, 2009) 3
  Larger

#5034 Alpine Bistort Specimen (Jun 26, 2009) 2
Polypodium virginianum (Rock Polypody)
Devil's Kitchen Lake, Carbondale, IL
#4107 Common Rock Polypody Fern (Nov 05, 2006) 2
  Larger

Shawnee NF -- Burden Falls Wilderness, Harrisburg, IL
#1572 Rock Polypody New Fronds (Apr 16, 2011) 4
  Larger

Starved Rock State Park, Ottawa, IL
#5369 Fern Covered Boulder (Oct 31, 2016) 3
  Larger

#5370 Natural Berm in Illinois Canyon (Oct 31, 2016) 3
  Larger

Perrot State Park, Trempealeau, WI
#110 Rock Polypody Ferns on Lichen Covered Cliff Face (Aug 22, 2016) 2
  Larger

#291 Rock Polypody and Virginia Creeper Share a Cliff Face (Aug 22, 2016) 3
  Larger

Polystichum acrostichoides (Christmas Fern)
Dixie Briggs Fromm, Algonquin, IL
#5323 Christmas Fern Showing Sporangia (Aug 06, 2016) 2
  Larger

#5322 Christmas Fern Specimen (Aug 06, 2016) 2
  Larger

Cottonstone Mountain, Orford, NH
#4048 Christmas Fern with New Fronds (May 14, 2006) 3
  Larger

Polystichum munitum (Western Swordfern)
Prairie Creek Redwoods Fern Canyon, Orick, CA
#3141 Canyon Wall Densely Covered with Ferns (May 14, 2009) 4
  Larger

Redwood National Park Tall Trees Area, Orick, CA
#4847 Rhododendron in a Red Alder Thicket (May 19, 2009) 4
  Larger

Prairie Creek Redwoods Fern Canyon, Orick, CA
#4817 Sword Ferns on Canyon Wall (May 14, 2009) 2
  Larger

Redwood National Park Tall Trees Area, Orick, CA
#3138 Rhododendron and Western Swordferns (May 19, 2009) 2
  Larger

#4841 Western Swordfern Specimen (May 18, 2009) 2
  Larger

Olympic National Park -- Hoh River Trail, Forks, WA
#6794 Hoh Rainforest in Morning Light (Jul 28, 2014) 3
  Larger

Olympic National Park -- Quinault, Hoquiam, WA
#4862 Willaby Creek Gorge Wall (May 28, 2009) 4
  Larger

Pontederia cordata (Pickerelweed)
Indian Pond, Orford, NH
#2635 Bumblebee on Pickerelweed (Jul 28, 2018) 3
  Larger

#5666 Pond Meets Marsh (Jul 30, 2018) 3
  Larger

#764 Pickerelweed at the Pond Shore (Jul 20, 2018) 3
  Larger

#5656 Pickerelweed in a Summer Marsh (Jul 28, 2018) 3
  Larger

#2636 Interesting Collection of Aquatic Plants (Aug 25, 2002) 3
  Larger

Trempealeau National Wildlife Refuge, Trempealeau, WI
#5285 Pickerel Weed with Bee (Aug 23, 2016) 3
  Larger

Populus fremontii (Fremont Cottonwood)
Anza-Borrego Desert, Borrego Springs, CA
#1423 Cottonwood in Fall Color (Dec 12, 2005) 3
  Larger

Populus tremuloides (Quaking Aspen)
Porcupine Mountains - Escarpment Trail, Ontonagon, MI
#5577 Quaking Aspen and White Pine Overlooking Lake of the Clouds (Oct 16, 2017) 3
  Larger

Wasatch-Cache NF -- Tony Grove, Garden City, UT
#6735 Wildflowers in an Aspen Grove (Jul 19, 2014) 3
  Larger

Dixie National Forest Along UT 143, Panguitch, UT
#6508 Aspen and Red Rock Portrait (Sep 24, 2013) 4
  Larger

#6515 The Road Less Traveled (Sugarloaf Mountain Rd) (Sep 26, 2013) 4
  Larger

#6506 Aspen, Spruce, Sage - Layers of Fall Color (Sep 24, 2013) 4
  Larger

#2221 Aspen and Red Rock Panorama (Sep 24, 2013) 3
  Larger

#6507 Aspen and Spruce Portrait (Sep 24, 2013) 4
  Larger

Potamogeton natans (Common Pondweed)
Indian Pond, Orford, NH
#2636 Interesting Collection of Aquatic Plants (Aug 25, 2002) 3
  Larger

Shadow (Boot) Lake, Florence, WI
#854 Floating Common Pondweed (Jun 15, 2000) 2
  Larger

Potentilla arguta (Prairie Cinquefoil)
Lake in the Hills Fen, Lake in the Hills, IL
#95 Prairie Cinquefoil Close-up (Jun 23, 2012) 3
  Larger

Harlem Hills Prairie, Loves Park, IL
#2784 Prairie Cinquefoil Specimen (Jun 18, 2016) 3
  Larger

Potentilla flabellifolia (High Mountain Cinquefoil)
Olympic National Park -- Obstruction Point Road, Port Angeles, WA
#6744 Olympic Paintbrush and High Mountain Cinquefoil (Jul 24, 2014) 3
  Larger

Mt. Rainier National Park Natches Pk Loop Trail, White River Entrance, WA
#485 High Mountain Cinquefoil Specimen (Jul 29, 2014) 2
  Larger

Potentilla recta (Sulfur Cinquefoil)
Lake in the Hills Fen, Lake in the Hills, IL
#18 Sulphur Cinquefoil Close Up (Jun 22, 2006) 2
  Larger

Potentilla villosa (Alpine Cinquefoil, Villous Cinquefoil)
Arctic Valley, Anchorage, AK
#5776 Alpine Cinquefoil in Context (Jun 27, 2009) 3
  Larger

Prenanthes alba (White Lettuce)
Starved Rock State Park, Ottawa, IL
#1295 White Lettuce Flowers Close Up (Sep 15, 2008) 4
  Larger

Prenanthes aspera (Rough White Lettuce)
Braidwood Dunes, Braidwood, IL
#1258 Rough White Lettuce Close-up (Aug 25, 2001) 2
Nachusa Grasslands, Nachusa, IL
#1257 Rough White Lettuce (Sep 13, 2016) 2
  Larger

Primula mistassinica (Arctic Primrose, Mistassini Primrose)
The Ridges Sanctuary, Baileys Harbor, WI
#5623 Arctic Primrose Portrait (May 22, 2018) 3
  Larger

Toft Point SNA, Bailey's Harbor, WI
#5633 Arctic Primrose Colony (May 22, 2018) 3
  Larger

Primula veris (European Cowslip)
LeRoy Oakes Forest Preserve, St. Charles, IL
#2038 European Cowslip (May 03, 2002) 2
#2039 European Cowslip Close-up (May 03, 2002) 2
Pritchardia sp. (Fan Palm)
Akaka Falls State Park, Honomu, HI
#4525 Fan Palm in Fruit (Jan 15, 2008) 3
  Larger

Prosartes hookeri (Drops-of-gold, Fairy-bells)
Olympic National Park -- Sol Duc River Valley, Port Angeles, WA
#4897 Hooker's Fairybells Specimen (Jun 01, 2009) 2
  Larger

Prosartes lanuginosa (Yellow Fairybells)
Great Smoky Mountains (Kanati Fork Trail), Cherokee, NC
#1019 Yellow Fairybells Close-up (Apr 13, 2015) 3
  Larger

Prosartes smithii (Smith's Fairybell, Largeflower Fairybells)
Mackerricher State Park, Fort Bragg, CA
#4779 Smith's Fairybell Closeup (May 10, 2009) 4
  Larger

Prunus americana (American Plum)
Shawnee NF -- Garden of the Gods, Mitchellsville, IL
#2579 American Plum in Fruit (Oct 29, 2010) 4
  Larger

Prunus angustifolia (Chickasaw Plum)
Buffalo National River -- Tyler Bend, St. Joe, AR
#3938 Chickasaw Plum Blossoms Close Up (Mar 25, 2006) 2
  Larger

Prunus fremontii (Desert Apricot)
Anza-Borrego Desert Cool Canyon, Borrego Springs, CA
#3367 Desert Apricot Specimen (Feb 13, 2005) 3
  Larger

#5240 Desert Apricot Close-up (Mar 04, 2010) 3
  Larger

#2176 Riding's Forester Moth on Desert Apricot (Feb 01, 2003) 2
Prunus pumila var. pumila (Great Lakes Sand Cherry)
Illinois Beach State Park, Zion, IL
#661 Sand Cherry in Fruit (Jul 10, 2000) 2
#662 Sand Cherry in Flower Close-up (May 28, 2005) 3
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#660 Sand Cherry Blooming on Dune (May 28, 2005) 2
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Prunus serotina (Wild Black Cherry)
David Schwaegler's Home, Lake in the Hills, IL
#1339 Wild Black Cherry Tree in Bloom (May 24, 2015) 3
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#26 Lake in the Hills in Autumn (Oct 22, 2015) 3
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Prunus virginiana (Choke Cherry)
Illinois Beach State Park, Zion, IL
#2079 Choke Cherry Flowers Close-up (May 11, 2002) 3
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#2078 Choke Cherry in Oak Savanna (May 11, 2002) 2
Psathyrotes ramosissima (Velvet Turtleback)
Death Valley NP Cottonwood and Marble Canyons, Stovepipe Wells, CA
#1538 Velvet Turtleback Close Up (Mar 15, 1998) 4
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Psidium cattleianum (Strawberry Guava)
Manuka State Park and Natural Area, Captain Cook, HI
#4502 Strawberry Guava in Fruit (Feb 06, 2008) 3
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Psilostrophe cooperi (White-stemmed Paperflower)
Saguaro National Park, Tucson, AZ
#1590 White-Stemmed Paperflower Close-up (Dec 26, 2000) 2
Psilostrophe sparsiflora (Greenstem Paperflower)
Capitol Reef NP UT 24 and Scenic Drive, Torrey, UT
#6533 Greenstem Paperflower Specimen (Sep 29, 2013) 4
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Psilostrophe tagetina (Woolly Paperflower)
Big Bend National Park Rio Grande Vlg Area, Alpine, TX
#2844 Woolly Paperflower Close-up (Dec 27, 2003) 2
Psorothamnus schottii (Shott's Indigo Bush)
Anza-Borrego Desert, Borrego Springs, CA
#3329 Branch of Schott's Indigo Bush in Bloom (Mar 10, 2005) 4
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Anza-Borrego Desert Henderson and Coyote Cyn, Borrego Springs, CA
#1437 Indigo Bush Flower Close-up (Jan 15, 2005) 4
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Psorothamnus spinosus (Smoketree)
Anza-Borrego Desert, Borrego Springs, CA
#3438 Smoketrees and Wildflowers in Indian Gorge (Mar 12, 2005) 3
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Ptelea trifoliata (Wafer Ash, Common Hoptree)
Trout Park Nature Preserve, Elgin, IL
#5429 Wafer Ash in Flower (May 30, 2017) 3
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Pteridium aquilinum (Brackenfern)
Mauna Loa Road Hawaii Volcano National Park, Volcano, HI
#6258 Large Koa with a Bracken Fern Understory (Oct 05, 2012) 3
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Baraga County, L'Anse, MI
#2088 Brackenfern in a Bed of Fallen Leaves (Oct 09, 2015) 3
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Nestoria Herman Road, L'Anse, MI
#2118 Rose Hips on Brackenfern (Oct 10, 2015) 3
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#2123 Brackenfern and Maple Kaleidoscope (Oct 10, 2015) 3
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Black Moshannon State Park, Philipsburg, PA
#5825 Red Pine Plantation with Brackenfern Understory (Jun 20, 2011) 3
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Pulsatilla occidentalis (Western Pasqueflower, White Pasqueflower)
Mt. Rainier National Park Paradise Area, Ashford, WA
#497 Western Pasqueflower Just Opening (Jul 31, 2014) 3
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#6325 Western Pasqueflower in Seed (Aug 14, 2013) 4
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#6327 Diverse Wildflowers (Aug 14, 2013) 4
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#6328 Western Pasqueflower and Subalpine Lupine (Aug 14, 2013) 2
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#6828 American Hoverfly on Western Pasqueflower (Jul 31, 2014) 4
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Mt. Rainier National Park Natches Pk Loop Trail, White River Entrance, WA
#6802 Western Pasqueflower in Bloom (Jul 29, 2014) 4
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#6803 Wildflowers on a Sunny Slope (Jul 29, 2014) 3
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Pulsatilla patens (Eastern Pasqueflower)
Harlem Hills Prairie, Loves Park, IL
#4346 Pasqueflower in Three Stages (Apr 19, 2007) 2
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#4347 Pasqueflower Close-up (Apr 17, 2008) 3
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#4576 Quartet of Pasqueflowers (Apr 17, 2008) 3
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#4575 Pasqueflowers on Burned Prairie (Apr 17, 2008) 3
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#1356 Pasque Flower in Seed (May 20, 2001) 2
Purshia stansburiana (Stansbury Cliffrose)
Red Rock Canyon National Conservation Area, Las Vegas, NV
#3612 Stansbury Cliffrose at Base of Calico Hills (Apr 18, 2005) 2
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Purshia x subintegra (Arizona Cliffrose)
Dead Horse Ranch State Park, Cottonwood, AZ
#6014 Arizona Cliffrose Specimen (Apr 18, 2012) 2
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#4656 Arizona Cliffrose Close-up (Apr 18, 2012) 3
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Pycnanthemum virginianum (Common Mountain Mint)
Lake in the Hills Fen, Lake in the Hills, IL
#273 Mountain Mint Specimen (Jul 27, 2006) 2
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#257 Culver's Root with Mountain Mint and Black-eyed Susans (Jul 17, 2005) 3
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Nachusa Grasslands, Nachusa, IL
#5312 Fringed Gentians Supported by Sneezeweed and Mountain Mint (Sep 13, 2016) 3
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Scuppernong Prairie SNA, Eagle, WI
#3688 Black Swallowtail Butterfly Getting Nectar from Mountain Mint (Jul 16, 2005) 4
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Pyrola asarifolia (Pink Pyrola)
The Ridges Sanctuary, Baileys Harbor, WI
#2794 Showy Ladyslipper in Context with Pink Pyrola (Jun 21, 2016) 2
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#824 Pink Pyrola Pair (Jun 23, 2014) 3
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#6619 Pink Pyrola Colony (Jun 23, 2014) 3
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Shadow (Boot) Lake, Florence, WI
#2435 Pink Pyrola in the Rain (Jun 27, 2003) 2
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Pyrola chlorantha (Green Shinleaf)
The Ridges Sanctuary, Baileys Harbor, WI
#832 Greenish Flowered Pyrola with Lichen Covered Log (Jun 22, 2016) 3
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Pyrola elliptica (Wax Flower Shinleaf)
Indian Pond, Orford, NH
#2154 Wax Flower Shinleaf Close-up (Jul 18, 2018) 3
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Shadow (Boot) Lake, Florence, WI
#767 White Pyrola Close-up (Jul 21, 2017) 3
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