Chamberlain, Charles Joseph at English => English (The Britannica Concise) Of Explained:
U.S. botanist. He was born near Sullivan, Ohio. His research into the structure and life cycles of primitive plants (cycads) enabled him to suggest a course of evolutionary development for the egg and embryo of seed plants (spermatophytes) and to speculate about a cycad origin for flowering plants (angiosperms). He organized and directed the botanical laboratories at the Univ. of Chicago (1897-1931), where, with plants collected in Mexico, Australia, New Zealand, S. Africa, and Cuba, he created the world's foremost collection of living cycads.