Verbesina encelioides, (Cav.) Bentham & Hooker fil. ex A. Gray

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 142

1. V. encelioides (Cav.) Bentham & Hooker fil. ex A. Gray in Brewer, S. Watson & A. Gray, Bot. Calif. 1: 350 (1876).

Erect, appressed-pubescent, branched annual up to 130 cm. Leaves 8-10 cm, opposite below, alternate above, ovate or deltate-ovate, coarsely serrate, usually with broadly auriculate, winged petioles. Capitula terminal, solitary; peduncles up to 12 cm. Involucral bracts linear, acute, subequal. Ligules 10-15,15-25 mm, orangeyellow, 3-lobed at apex. Achenes of ligulate florets 3 mm, 3-angled, tuberculate, blackish, awnless. Achenes of tubular florets 4-7 mm, oblong-cuneate, white-winged, blackish, hairy; pappus of 2 scabrid, filiform awns; receptacular scales membranous, as long as the achenes. Locally naturalized. [?Da?Ge?He?Su.] (North America.)