Notes on the diatom collection of the Natural History Museum, London (BM) VIII: the types of Arachnoidiscus in Brown’s monograph (Brown 1933)

Abstract

Nicholas Edward Brown, a botanist primarily interested in the African flowering plant flora, was also an active member of the Quekett Microscopical Club. In 1933, he published a monograph on the genus Arachnoidiscus. Brown had described Arachnoidiscus antarcticus in 1920 and went on to add a further 19 more new species to the genus. The present contribution is not intended as a review of Brown’s species in Arachnoidiscus, but an account of the specimens available in BM that went towards its creation, with some notes on nomenclature. A few words are devoted to other species Brown described, and other names he proposed.