"A Rare Botanical Legacy: The Contributions of Ruby and Arthur Van Deventer" is a highly sought-after textbook published in 2009 by Heyday Books. The book, authored by Ruby and Arthur Van Deventer, focuses on the subject area of botany and is presented in a hardcover format. It offers a unique insight into the world of science and medical botany, making it a valuable resource for students and enthusiasts interested in exploring the rare and unique contributions of the Van Deventer duo in the field of botany.