Instead of trying to identify plants one-at-a-time, Botany in a Day give you a way to learn them by the hundreds, based on the principle that related plants have similar patterns for indentification, and they often have similar uses.
The one-day tutorial included in the text teaches you seven key patterns to recognize more than 45,000 species of plants worldwide. Master these seven patterns and you will be ready to use the included reference guide--Thomas J. Elpel's Herbal Field Guide to Plant Families of North America. Here you will find the patterns for indentification and the patterns of uses for the majority of plants across the continent.
Botany in a Day is used as a guide by thousands of individuals, plus herbal schools and universities across North America.