By Dr. Alfred Byrd Graf. The emphasis is tropical and sub-tropical in this impressive 1,154 page color cyclopedia. There are 7,000 color photographs. Covers flowering and fruited trees and shrubs, palms and conifers, ferns, vines, carnivorous plants, cacti and succulents, bulbous and cormous, grasses and bamboo plus many others including temperate and hardy. An outstanding reference. Hardcover.