@book {2083,
	title = {Catalogue of the African Plants collected by Dr. Friedrich Welwitsch in 1853-61},
	volume = {1(3)},
	year = {1898},
	note = {Box on WSW case, Africa},
	pages = {722-744},
	publisher = {British Museum of Natural History},
	organization = {British Museum of Natural History},
	address = {London},
	keywords = {Convolvulaceae of Angola, Operculina tuberosa p. 730},
	author = {Hiern, William Philip}
}
