Entry for VERNONIA Calvoana Hook. f. [family COMPOSITAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical Africa, Vol 1, page 253, (1877) Author: (By Prof. Oliver and W. P. Hiern.)
Names
VERNONIA CalvoanaHook. f. [family COMPOSITAE], in Journ. Linn. Soc. vii. p. 199 (Stengelia). —Bot. Mag. 5698.
Information
Shrub of 8–12 ft.; extremities sulcate-striate, minutely tawny-tomentose. Leaves ample, membranous, oblanceolate or narrow-elliptical acuminate, narrowed below into a winged petiole, often auricled at base, denticulate, minutely pubescent on the nerves beneath, 1/2–1 1/4 ft. long. Capitula 2 in. diam., florets purple, on peduncles varying to 3–4 in. in diffuse terminal cymose panicles; involucre nearly glabrous, intermediate scales with an elliptic-ovate rather obtuse spreading white appendix, 3/4 in. long, from the concave closely appressed imbricating base. Corolla-tube abruptly narrowed. Achenes black, glabrous, with 10 prominent costæ, alternating with 10 narrower.
