Family Guide for Fruits and Seeds

Kirkbride, J.H., Jr., C.R. Gunn, and M.J. Dallwitz. 2006. United States Department of Agriculture (USDA), Agricultural Research Service.

Field identification of the 50 most common plant families in temperate regions

(including agricultural, horticultural, and wild species)  
Lena Struwe, 2017, Rugers, the State University of New Jersey.

Note: Listed characteristics are the most common characteristics; there might be exceptions in rare or tropical species. This compendium is available for free download without cost for noncommercial uses at The author welcomes updates and corrections.