Investigation of extracts of Boehmeria cylindrica resulted in identification of cryptopleurine and 3,4-dimethoxy-ω-(2′-piperidyl)acetophenone, known alkaloids, as agents responsible for intense activity against Candida albicans. Julandine, the secophenanthroquinolizidine alkaloid related to cryptopleurine, was also active but not definitely identified in the extracts examined. © 1982.