]> [author note: BONN; Epithytic Cactaceae; scanning-electron microscopy; angiosperm systematics] [collector note: BONN, FR, K, ZSS [Barthlott provided a portion of the data on 10 Oct 2000]] Botany Barthlott, Wilhelm A. Barthlott, Wilhelm A. W. A. Barthlott Barthlott Wilhelm A. Barthlott 1946