Flattop Hymenopappus (Hymenopappus scabiosaeus var. corymbosus
Flattop Hymenopappus Hymenopappus scabiosaeus L'Her. var. corymbosus (T. & G.) B. L. Turner (COMPOSITE FAMILY)
Flattop hymenopappus is an erect biennial 2-4 ft tall with wooly, ribbed stems. The alternate leaves are broadly lanceolate, pinnately parted, and reduced above. The basal rosette leaves often are not lobed. The stem does not elongate until the second season of growth. The rayless heads are clustered into a flattopped inflorescence with white to creamy-white disk florets. The involucral bracts are loose and broad, the upper part petallike and white. The achene has minute pappus scales.