]> [P. F. Stevens] [author note: A; phylogeny; history of classification; George Bentham; Clusiaceae, Ericaceae] [collector note: Mt. Suckling (col. 1972): e.g. LAE, A; husband of Elizabeth A. "Toby" Kellogg] Botany Stevens, Peter Francis Stevens, Peter Francis P. F. Stevens Stevens, P. F. Stevens, Peter F. Stevens, Peter Francis et alia 1944