Bower, Frederick Orpen, 1855-1948 The origin of a land flora : a theory based upon the facts of alt ernation / F. O. Bower ... with numerous illustrations - London : Macmillan, 1908 - xi, [1], 727 p. : front., ill. ; 23 cm. Subjects--Topical Terms: Plants -- Evolution Phylogeny (Botany) Generations, Alternating Dewey Class. No.: 581.38