Dimorphocarpa membranacea (Payson) Rollins Dimorphocarpa membranacea (Payson) Rollins, Publ. Bussey Inst. Harvard Univ. 30. 1979 sec. Rollins 1993≡Dithyrea membranacea Payson in Ann. Missouri Bot. Gard. 5(2): 149-150. 1918 syn. sec. Rollins 1993