TYPE. Introduced from Central America by Messrs. F. Sander & Co., from whom a specimen as been received at Kew. A plant has also been acquired by A. Wilson, Esq., of Westbrook, Sheffield, who has also sent a plant, and after whom the species is named. Messrs. F. Sander & Co. s.n. (syntype, K). Wilson s.n. (syntype, K).