The PA Flora Database (PFD) has its roots in the work of Edgar Wherry, John Fogg, Jr., and Herbert Wahl, the "Atlas of the Flora of PA", pub. by the Morris Arboretum of the Univ. of PA. Over a period of 40 years, Wherry and his colleagues gathered data from the major PA herbaria and manually placed a quarter of a million dots on over 3,500 maps, which are reproduced in this volume. The checklist of included taxa has undergone extensive review to reflect recent taxonomic and nomenclatural revisions. Recent discoveries have been added and distribution data has been updated. This volume also includes collections made in the 1990s in conjunction with the PA Natural Diversity Inventory. Extensive illustrations. Reprinted 1996.

Designed especially for winter use and featuring almost six hundred illustrations, this taxonomic guide describes some nine hundred plant species by their twig, bud, and bark characteristics. All the trees, shrubs, and woody ground covers that grow without aid of cultivation in the Southeast are presented here, in a single reference.

This guide to common and unique plants found in forests of the Southeast thoroughly covers 330 species of forbs (herbaceous plants), grasses, vines, and shrubs, with a special emphasis on the plants role in wildlife sustenance. Packed with detailed color photographs, the book is a must-have for forest landowners, game and wildlife managers, biologists, outdoors enthusiasts, students--anyone with an interest in the intricate and often unexpected interrelationships between the flora and fauna of our regions forests. Features: Descriptions of native and nonnative (exotic or invasive) plants, including 330 species of forbs, in 180 genera: grasses, sedges, and rushes; woody vines and semiwoody plants; shrubs; palms and yucca; cane; cactus; ferns; and ground lichen 650 color photos Map of physiographic provinces 56 simple black-and-white drawings of flower parts, flower types, and inflorescences, leaf arrangements, leaf divisions, shapes, and margins, and parts of a grass plant Glossary Index of genera by family, index by wildlife species, and index of scientific and common names