Title: Systematic Botany of Flowering Plants: A New Phytogenetic Approach of the Angiosperms of the Temperate and Tropical Regions / Edition 1, Author: R E. Spichiger
Title: Floral Biology: Studies on Floral Evolution in Animal-Pollinated Plants / Edition 1, Author: David G. Lloyd
Title: Flowering Plant Origin, Evolution & Phylogeny / Edition 1, Author: David W. Taylor