Berylsimpsonia vanillosma (C. Wright) B. L. Turner, Phytologia 74: 352. 1993.
Basionym: Proustia vanillosma C. Wright
Synonyms: Proustia krugiana Urb.
Proustia stenophylla Urb. & Ekman
Clambering shrub, woody, 2-5 m in length. Stems cylindrical, broadened at the base of the leaf to form an obtuse or spiny, usually bifurcate, hardened or thickened area (callosity). Leaves alternate, distichous; blades 4-7.5 × 1.5-3.7 cm, elliptical, oblong or ovate, chartaceous or subcoriaceous, the apex acute, obtuse, or acuminate, the base acute to subcordiform, the margins denticulate or spinulose or less frequently entire; upper surface scabrous, (strigulose), the venation somewhat sunken; lower surface appressed-pubescent (sericeous), with prominent venation; petioles 1-3 mm long, puberulous. Capitula of few flowers, subsessile, clustered in cymes to form a paniculiform or racemiform inflorescence; involucre cylindrical, ca. 1 cm high, phyllaries in 3-4 series. Corollas bilabiate, yellow, 8-10 mm long, the inner lip 2-dentate, the outer one 3-dentate. Achene 3-6 mm long, linear, papillose; pappus of numerous barbate setae, yellowish, 6-8 mm long.
Phenology: Flowering from November to July and fruiting from February to September.
Status: Native, locally common.
Selected Specimens Examined: Heller, A.A. 6263; Sargent, F.H. 375; Sintenis, P. 2920; Acevedo-Rdgz., P. 7068.
Distribution: In forests and pastures on the southern slope of the Cordillera Central and in southwestern Puerto Rico, at middle and lower elevations. Also in Cuba and Hispaniola.