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Trees and Shrubs of California (CA Natural History Guides) - Resource with key, color photos, line illustrations, and maps showing distribution. |
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Introduction to Shore Wildflowers of California, Oregon, and Washington (CA Natural History Guides) - Plants grouped by color with photographs. |
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Central Coast Wildflowers, Monterey, San Luis Obispo & Santa Barbara Counties of California - Plants grouped by "community" and includes photos and line illustrations. |
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Wildflowers of the Columbia Gorge, A Comprehensive Field Guide - A great book for this area of Oregon/Washington. Includes field trip ideas and suggested dates. |
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Introduction to California Desert Wildflowers (CA Natural History Guides) - Plants grouped by color with photographs. |
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Wildflowers of the Western Cascades - Covers British Columbia to the Siskiyous. Grouped by family with line drawings and photos. |
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