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| Aquatic and Wetland Plants of Southeastern United States: Dicotyledons | Godfrey, R. K. , Wooten, J.W. | Plant Identification |
| Aquatic and Wetland Plants of the Western Gulf Coast | Stutzenbaker, C. D. | Wildlife |
| Arboretum America: A Philosophy of the Forest | Beresford-Kroeger, D. | Landscaping Natural History Useful Plants |
| Arizona Flora | Kearney, T. H. & R. H. Peebles | Plant Identification |
| Arizona Wildflowers: A Year-Round Guide to Nature's Blooms | Desert Botanical Garden Staff, Arizona Highways Staff | Wildflowers |
| Arizona's Natural Environment:landscapes and habitats | Lowe, C.H. | Natural History Landscaping |
| ARKANSAS SPRING: Dogwoods, Waterfalls and Wildflowers [Photography] | Ernst, T. | Wildflowers |
| Arkansas Trees & Wildflowers: An Introduction to Familiar Species (State Nature Guides) | Kavanagh, J. | Wildflowers |
| Arkansas Wildflowers | Kurz, D. | Wildflowers |
| Armitage's Native Plants for North American Gardens | Armitage, A. M. | Gardening |
| Atlantic Coastal Plain Wildflowers : A Guide to Common Wildflowers of the Coastal Regions of Virginia, North Carolina, South Carolina, Georgia, and Northeastern Florida | Nelson, G. | Wildflowers |
| Atlas of North American Astragalus | Barneby, Rupert C. | Astragalus spp. |
| Atlas of North American Astragalus Volume 2 | Barneby, Rupert C. | Astragalus spp. |
| Atlas of the Flora of the Great Plains | Barker, W. T.; T. M. Barkley | Plant Identification |
| Atlas of the Vascular Plants of Texas | Turner, B. L.; H. Nichols; G. Denny; O. Doron | Natural History |
| Atlas of the Vascular Plants of Utah | Albee, B.J. et al. | Plant Identification |
| Atlas of the Wisconsin Prairie and Savanna Flora (Technical bulletin) | Cochrane, T. S. and Iltis, H. H. | Plant Identification |
| Atlas of Virginia Flora | Harvill, B., et al | Plant Identification |
| Attracting Birds to Southern Gardens | Pope, T. E.; N. G. Odenwald; C, Fryling | Wildlife |
| Attracting Birds to Your Backyard : 536 Ways To Turn Your Yard and Garden Into a Haven For Your Favorite Birds | Roth, S. | Gardening Wildlife |
| Attracting Birds: From the Prairies to the Atlantic | Davison, V.E. | Wildlife |
| Audubon Backyard Birdwatcher: Birdfeeders and Bird Gardens | Burton, R.; S. W. Kress | Wildlife Gardening |
| Autumn Leaves: A Guide to the Fall Colors of the Northwoods | Lanner, R.M. | Natural History Plant Identification |
| Autumn, Leaves & Winter Berries in Arkansas | Hunter, C. G. | Plant Identification |
| Backyard Bird Habitat: Create Your Own Thriving Bird Sanctuary | Curtis, W. & J. Curtis | Wildlife |
| Basic Essentials: Edible Wild Plants and Useful Herbs | Meuninck, J. | Edible Plants Useful Plants |
| Berry Finder: A Guide to Native Plants with Fleshy Fruits for Eastern North America | Miller, D. S. | Edible Plants Useful Plants |
| Best Garden Plants for Missouri | Joggerst, A. and Williamson, D. | Gardening |
| Best Garden Plants for Tennessee | Hamilton, S. & Peters, L. | Gardening |
| Best Plants for New Mexico Gardens and Landscapes: Keyed to Cities and Regions in New Mexico and Adjacent Areas | Morrow, B. H. | Gardening |
| Best Spring Ever: Why El Nino Makes The Desert Bloom | C. Goodpasture; J. E. Bowers | Natural History |
| Betrock's Florida Plant Guide | Gilman, E. | Sustainable Landscaping |
| Betrock's Reference Guide to Florida Landscape Plants | Broschat, T.K. & Meerow, A.W. | Plant Identification |
| Big Bluestem: Journey into the Tall Grass | Smith, A. | Natural History |
| Big Trees: The Florida Register | Ward, Daniel B.; Ing, Robert T. | Natural History |
| Biological Control of Invasive Plants in the United States | Coombs, E. M. , J. K. Clark , G. L. Piper; A. F. Cofrancesco | Invasive Plants |
| Biology and Cultivation of Edible Mushrooms | Chang, S.T. & W.A. Hayes (eds.) | Edible Plants |
| Biology of Mangroves, The. | Hogarth, Peter J. | Natural History Useful Plants |
| Birding in the San Juan Islands | Lewis, M.G. and Sharpe, F. A. | Wildlife |
| Birdscaping Your Garden: A Practical Guide to Backyard Birds and the Plants That Attract Them | Adams, G. M. | Gardening Landscaping Wildlife |
| Black Drink: A Native American Tea | Hudson, Charles M. | Useful Plants |
| Blue Ridge 2020: An Owner's Manual | Nash, S. | Natural History |
| Bogs of the Northeast | Johnson, J.; I. A. Worley | Natural History |
| Bogs, Meadows, Marshes, and Swamps: A Guide to 25 Wetland Sites of Washington State | Churney, M. & S. Williams | Natural History |
| Book of Field and Roadside: Open-Country Weeds, Trees, and Wildflowers of Eastern North America | Eastman, J. | Plant Identification Wildflowers Wildlife |
| Book of Forest and Thicket: Trees, Shrubs, and Wildflowers of Eastern North America | Eastman, J. | Natural History Plant Identification Wildlife |
| Book of Swamp and Bog: Trees, Shrubs and Wildflowers of the Eastern Freshwater Wetlands | Eastman, J. & A. Hansen | Plant Identification Natural History |
| Botanica North America: An Illustrated Guide to Native Plants: Their Botany, Their History, and the Way They Have Shaped Our World | Harris, M. | Natural History Plant Identification |
| Botany | Brewer, W. H., S. Watson and A. Gray | California botany |
| Botany & Healing: Medicinal Plants of New Jersey & the Region | Still, C.C. | Medicinal Plants |
| Botany for Gardeners | Capon, B. | Gardening Natural History |
| Botany in a Day: The Patterns Method of Plant Identification | Elpel, T. J. | Medicinal Plants Plant Identification Wildflowers |
| Bringing Nature Home: How Native Plants Sustain Wildlife in Our Gardens | Tallamy, Douglas W. | Wildlife |
| Bringing Nature Home: How You Can Sustain Wildlife with Native Plants | Tallamy, Douglas W. | Wildlife |
| Brush Management: Past Present, Future | Hamilton, W.T.; McGinty, A.; Ueckert, D.N.; Hanselka, C.W.; Lee, M.R. | Invasive Plants |
| Building Inside Nature's Envelope: How New Construction and Land Preservation Can Work Together | Wasowski, Andy | Landscaping |
| Bulbs of North America | North American Rock Garden Society | |
| Bulletproof Flowers for the South | Wilson, J. | Gardening |
| Butterflies of the East Coast: An Observer's Guide | R. Cech and G. Tudor | Wildlife |
| Butterflies: How to Identify and Attract Them to Your Garden | Schneck, M. | Gardening Wildlife |
| Butterfly Gardening for the South | Ajilvsgi, Geyata | Gardening Wildlife |
| Butterfly Gardening with Florida's Native Plants | Huegel, C. N. | Gardening Wildlife |
| Butterfly Gardening: Creating Summer Magic in Your Garden | Xerces Society and Smithsonian Institution | Wildlife |
| Cacti | Clive Innes and Charles Glass | Plant Identification |
| Cacti in New Mexico | Wooton, E. A. | Plant Identification |
| Cacti of Texas and Neighboring States: a field guide | Weniger, D. | Plant Identification |
| Cacti of Texas: a field guide | Powell, A. M.; J. F. Weedin and S. A. Powell | Natural History Plant Identification |
| Cacti of the Desert Southwest | Quinn, M. | Plant Identification |
| Cacti of the Trans-Pecos and Adjacent Areas | Powell, A. M. and Weedin, J. F. | Plant Identification |
| Cacti of the United States and Canada | Benson, L. D. | Plant Identification |
| Cactus Handbook | Haustein, E. | Plant Identification |
| Cactus of Arizona Field Guide | Bowers, N.; Bowers, R. and Tekiela, S. | Plant Identification |
| Cactuses of Big Bend National Park | Evans, Douglas B. | Plant Identification |
| California Chaparral: An Elfin Forest | Head, W.S. | Natural History |
| California Desert Wildflowers | Munz, P.A. | Wildflowers |
| California Deserts | Schad, J | Natural History |
| California Flora and Supplement | Munz, P.A.; D. D. Keck | Plant Identification |
| California Landscape Garden: Ecology, Culture & Design | Francis, M. & A. Reimann | Gardening Landscaping Wildflowers |
| California Mountain Wildflowers | Munz, P. A. | Wildflowers |
| California Native Plant Link Exchange (online) | http://www.cnplx.info/index.html | Wildflowers |
| California Native Plant Society's inventory of rare and endangered plants of California | Tibor, D. P. | Rare and Endangered |
| California Native Plants for the Garden | Bornstein, C.; D. Fross; B. O'Brien | Gardening |
| California Native Trees & Shrubs for Garden & Environmental Use in Southern California and adjacent areas | Lenz, L. & J.L. Dourley | Gardening Plant Identification |
| California Spring Wildflowers from the Base of the Sierra Nevada & Southern Mountains to the Sea | Munz. P. A. | Wildflowers |
| California Wildfire Landscaping | Gilmer, M. | Landscaping |
| California's Changing Landscapes: Diversity & Conservation of California Vegetation | Barbour, M.G., B. Pavlik, S. Lindstrom & F. Drysdale | Natural History |
| California's Wild Gardens: A Living Legacy | Faber, P. (ed.) | Natural History Plant Identification Rare and Endangered |
| California’s Wild Gardens: A Guide to Favorite Botanical Sites | Faber, P. M. | Natural History Wildflowers |
| Campanulas: A Gardener's Guide | Lewis, P.; M. Lynch | Gardening Plant Propagation |
| Canadian Wildflowers Through the Seasons | Ferguson, M. & R.M. Saunders | Wildflowers |
| Candidate threatened and endangered plants of Alaska with comments on other rare plants | Murray, D.F. ; R. Lipkin; A. L. Schell | Rare and Endangered |
| Canebrakes: Bamboo Forests of the Southeast, in Wild Earth journal, volume 12, number 2, pp. 38-45 | Platt, Steven; Christopher Brantley; and Thomas Rainwater | Natural History |
| Canoe Country Flora: Plants & Trees of the North Woods & Boundary Waters | Stensaas, M. | Plant Identification Natural History |
| Canyon Country Wildflowers, 2nd: A Guide to Common Wildflowers, Shrubs, and Trees (Wildflower Series) (Second Edition) | Fagan, D. | Wildflowers |
| Canyon Country Wildflowers: Including Arches and Canyonlands National Parks (Wildflower Series) (First Edition) | Fagan, D. | Plant Identification Wildflowers |
| Caprock Canyonlands: Journeys into the Heart of the Southern Plains | Flores, D.L. | Natural History |
| Carolinas Fruit & Vegetable Gardening: How to Plant, Grow, and Harvest the Best Edibles (Fruit & Vegetable Gardening Guides) | Elzer-Peters, K. | Gardening |
| Cast Iron Forest: a natural and cultural history of the North American Cross Timbers | Francaviglia, R. V. | Natural History |
| Catalog of the Flora of Colorado | Weber, W. A. and Wittmann, R. C. | Plant Identification |
| Catalogue of the flora of Missouri | Yatskievych, G. A. & J. Turner | Plant Identification |
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