©Benjamin Vogt, Monarch Gardens, photos 1, 2, 3, 4
©Bill Bouton, photos 1, 2, 3, 4
©Bonnie L. Harper, Lady Bird Johnson Wildflower Center, photo 1
©Brianna Borders, The Xerces Society, photo 1
©Bruce Newhouse, photo 1
©Bryan E. Reynolds, photos 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 left, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55
©Candace Fallon, The Xerces Society, photos 1, 2, 3, 4
©Carly Voight, The Xerces Society, photos 1, 2
©City of Portland, courtesy Casey Cunningham, Bureau of Environmental Services, photo 1
©Claudia Street, Yuba–Sutter Farm Bureau, photo 1
©Debbie Roos, photos 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
Dennis Krusac, USDA Forest Service, photos 1, 2, 3, 4, 5, 6
Eric Eldrege, NRCS Great Basin Plant Materials Center, photo 1
©Eric Lee-Mäder, The Xerces Society, photos 1, 2, 3, 4
©Heritage Seedlings, Inc., photo 1
©Hilary Cox, photos 1, 2, 3, 4, 5, 6
©iStock.com/49pauly, photo 1
©iStock.com/Bertl123, photo 1
©iStock.com/BorislavFilev, photo 1 right
©iStock.com/bruceman, photo 1
©iStock.com/dlewis33, photo 1
©iStock.com/JeffGoulden, photo 1
©iStock.com/jpll2002, photo 1
©iStock.com/janniswerner, photo 1
©iStock.com/LailaRberg, photo 1
©iStock.com/LordRunar, photo 1
©iStock.com/plinney, photo 1
©iStock.com/VvoeVale, photo 1
©iStock.com/WoodenDinosaur, photo 1
©Jason Sharp, photo 1
©Jennifer Hopwood, The Xerces Society, photos 1, 2, 3, 3
©Kenneth Setzer, photos 1, 2, 3 left
©Mace Vaughan, The Xerces Society, photo 1
©Mari Lee-Mäder, photo 1
©Mary K. “Mare” Hanson, photo 1
©Matthew Shepherd, The Xerces Society, photos 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25
©Minnesota Native Landscapes, photo 1
©MJ Hatfield, photo 1
©Nancy Lee Adamson, The Xerces Society, photos 1, 2, 3, 4
©Native American Seed, photo 1
©Penny Stowe, photos 1, 2 right, 3, 4, 5, 6, 7
©Peter Veilleux, East Bay Wildlands, photos 1, 2, 3, 4
©Richard Trelease, photo 1
©Robert Sivinski, photo 2
©Rod Gilbert, photos 1, 2, 3, 4, 5
©Steve Woodhall, photo 1
©Sue Carnahan, photo 1
©Thomas Palmer, photo 1
USDA-PLANTS Database, photo 1
©Wendy Caldwell, photo 1
Bugwood
used under a creative commons attribution 3.0 generic license
Charles T. Bryson, USDA Agricultural Research Service, photo 1
Dave Powell, USDA Forest Service, photo 1
David Cappaert, Michigan State University, photos 1, 2, 3
Howard F. Schwartz, Colorado State University, photo 1
Jerry A. Payne, USDA Agricultural Research Service, photo 1
John D. Byrd, Mississippi State University, photo 1
Rob Routledge, Sault College, photos 1, 2
Whitney Cranshaw, Colorado State University, photo 1
Flickr
used under a creative commons attribution–sharealike 2.0 generic license
Fritz Flohr Reynolds, photos 1, 2
Jami Dwyer, photos 1
Joe Decruyenaere, photo 1
Kid Cowboy, photo 1
M. Dolly, photo 1
Marvin Smith, photo 1
Pfly, photo 1
Tom Page, photo 1
used under a creative commons attribution–noderivs 2.0 generic license
Debbie Ballentine, photo 1
John Flannery, photo 1
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Forest and Kim Starr, photo 1
Miguel Vieira, photo 1
NatureShutterbug, photo 1
plerd, photo 1
Scott Zona, photo 1
The Marmot, photo 1
Tim Walker, photo 1
Wikimedia
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Udo Schmidt, photo 1
Walter Siegmund, photos 1, 2, 3
used under a creative commons attribution–share alike 2.5 license
used under a gfdl and creative commons attribution–share alike 3.0 unported license
ArtMechanic, photo 1
Cody Hough, photo 1
D. Gordon E. Robertson, photo 1
Hedwig Storch, photo 1
Jerry Friedman, photo 1
Kenpei, photos 1,
Petr Vilgus, photo 1
Stan Shebs, photos 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
released into the public domain
Hardyplants, photo 1
Stickpen, 1