books.google.com - The Encyclopedia of Trees and Shrubs describes and illustrates over 2,000 varieties. With Over 30,000 color photographs, this encyclopedia is for every naturalist from the novice to the experienced observer. FEATURES: - Information about over 2,000 trees and shrubs. - Over 30,000 color photographs. -...http://books.google.com/books/about/The_Illustrated_Encyclopedia_of_Trees_an.html?id=mZEhZMOFLiQC&utm_source=gb-gplus-shareThe Illustrated Encyclopedia of Trees and Shrubs