| Title | Author | Comments |
| Field Guide to the Trees and Shrubs of Southern Appalachians | Swanson, Robert E. | |
| Index of Garden Plants | Griffiths, Mark | This book covers all plant species that are frequently cultivated. Accurate scientific names are provided for over 60,000 ornamental and commercial plants. |
| Field Guide to Rocky Mountain Wildflowers | Craighead, John J. | Although this book fills an important need, the format of the Eastern Wildflower Guide by Roger Tory Peterson is preferred. This book covers about 590 species. |
| Illustrated Flora of the Northern United States and Canada | Britton, Nathaniel Lord | This Dover reprint of the original Brown and Britton comes in a three volume set. This set covers all of the vascular plants known to occur in the northeastern United States. It was originally published about 1896 as the first flora of the United States. Although many of the scientific names have been altered, this work still is of great value to serious botanists. All species include text and several detailed line drawings. In the difficult task of accurately identifying various plant species of the eastern United States, one can use a field guide as a start, and then refer to both Brown and Britton and the various state botanies as final authorities. |
| Field Guide to North American Wildflowers, Western Region | Spellenberg, Richard | This Field Guide includes 725 full-color pictures of wildflower species that occur from New Mexico through California to Alaska. |
| Field Guide to Southwestern and Texas Wildflowers | Niehaus, Theodore | This Field Guide is organized by both flower color and the number of petals. The line drawings are excellent. This guide covers 1,505 different species making it an extremely comprehensive guide to the wild flowers of the region. |
| Field Guide to Pacific States Wildflowers | Niehaus, Theodore F. | This excellent work organizes the line drawings by flower color and by number of petals. There are 1,492 species presented in this guide which makes it a very comprehensive work. |
| Field Guide to North American Wildflowers Eastern Region | Niering, William | This field guide contains detailed information on 600 species with notes on 400 additional species. There are 658 color pictures. |
| Wildflower Guide - Alaska & Yukon | White, Helen A. | Although this book only overviews some of the wildflowers of the area, the color pictures and text are very good, and this a very useful book. Approximately 160 species are covered. |
| Arizona Flora, with supplement | Kearney, Thomas | This state botany covers 3,438 different species found growing naturally in the state of Arizona. Ranges and descriptions are included. |
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