""Revisions of North American Grasses: Isachne, Oplismenus, Echinochloa, and Chaetochloa"" is a book written by botanist Albert Spear Hitchcock and published in 1920. The book is a detailed study of four genera of grasses found in North America. It provides a comprehensive account of the morphology, anatomy, distribution, and classification of these grasses. The book is written in a technical language and is primarily intended for botanists, researchers, and students of botany. It is an important contribution to the field of plant taxonomy and will be of great interest to anyone interested in the study of North American grasses.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.