Martin Huldrych Zimmermann
Contributor
Charles Bullard Professor of Forestry, Harvard University; Director, Harvard Forest, Petersham, 1970β84. Coauthor of Trees: Structure and Function.
Primary Contributions (1)
Angiosperm, any of about 352,000 species of flowering plants, the largest and most diverse group within the kingdom Plantae. Angiosperms represent approximately 80 percent of all the known green plants now living. The angiosperms are vascular seed plants in which the ovule (egg) is fertilized andβ¦
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