Dyspemptemorion cayennense (Nees) Bremek. in Bull. Torrey Bot. Club 75: 670. 1948 Dyspemptemorion cayennense (Nees) Bremek. in Bull. Torrey Bot. Club 75: 670. 1948Isotype: Hostmann 1122Taxon for this nameDyspemptemorion cayennense (Nees) Bremek. in Bull. Torrey Bot. Club 75: 670. 1948