Botany in a day APG : the patterns method of plant identification : an herbal field guide to plant families of North America
Thomas J. Elpel (Author)
Explains the patterns method of plant identification, describing eight key patterns for recognizing more than 45,000 species of plants, and includes an illustrated reference guide to plant families
Print Book, English, 2018
Edition 6.1 : minor edits and refinements throughout
HOPS Press, LLC, Pony, Montana, 2018