"Fleischmannia " species were traditionally included as part of the large " Eupatorium ", recognized in the broad sense based on achenes with five ribs and a pappus of capillary bristles . " Fleischmannia " is distinguished morphologically by having the inner surface of the corolla lobes markedly papillate ( requires magnification to see ), the carpopodia symmetrical and stopper-shaped, and the involucres small and with 3 series of subimbricate bracts.
