rudbeckia laciniata

achenes also belong black blade born chrysanthemum compositae eye false flower flowering glabrous globose golden green guangju hairless hairs head hemispherical herbs huang husheng inflorescence involucrate jin juhua known laciniata lanceolate like long months peduncles perennial period platycodon receptacle ribbed rudbeckia shaped short single slightly sparsely stems sunflower tongue tubular yellow