First published by the Big Bend Natural History Association in 1988 as Trees & Shrubs of Trans-Pecos Texas, this book is the only keyed guide to the more than 400 species of woody plants native to the Trans-Pecos region and adjacent areas in eastern New Mexico and northern Mexico. A. Michael Powell has significantly revised and expanded this edition, including nomenclature changes for 62 genera and new distribution information for 60 genera.

Ferns are usually thought of as plants of moist, humid regions, and at first glance the Trans-Pecos region of Texas, a rugged portion of the arid Chihuahuan Desert, does not appear to be a likely location for ferns and their relatives. Yet in many seemingly unsuitable dry habitats, on shadowed slopes, in canyons, and near springs, seeps, and streams can be found sixty-four species of ferns and fourteen species of fern allies. This book is a complete review of the true ferns as well as the related spikemosses and scouring rushes of the Trans-Pecos. In a concise, readable introduction, the...

One hundred thirty-two species, subspecies, and varieties of cacti may be found in Texas. About one hundred of them occur in the state s Trans-Pecos region, one of the most cactus-rich areas of the United States, but at least one kind can be found in every county of the state. This volume is an identification guide to the genera, species, and varieties of Texas cacti, with maps showing the distribution of each.Based on the comprehensive reference Cacti of the Trans-Pecos and Adjacent Regions (2004), by A. Michael Powell and James F. Weedin, this field guide provides briefer, less detailed...