Comprehensive Description
provided by North American Flora
Sommera guatemalensis Standlev, Contr. U. S. Nat. Herb 17:436. 1914.
Branches reddish-brown, sparsely lenticellate, appressed-pilose when young, soon glabrate; stipules narrowly lanceolate, 3.5-4.5 cm. long, attenuate, brown, more or less strigillosesericeous; petioles 2-5 cm. long, sericeous; leaf-blades oval to oblong-obovate, 17-32 cm. long, 8-14 cm. wide, acute or obtuse at the base, abruptly or subabruptly acuminate at the apex, with an acute acumen 1.5-2 cm. long, sericeous when young, in age sparsely appressed-pilose above with minute hairs, paler beneath, appressed-pilose along the veins and sparsely and minutely so elsewhere, the lateral veins prominent, subascending, arcuate ; inflorescence cymosecorymbose, many-flowered, the peduncles 2-5 cm. long, the flowers sessile or short-pedicellate; bracts broadly ovate or oblong, obtuse or abruptly short-acuminate, brown, sparsely appressedpilose or glabrate; hypanthium 3-4 mm. long, densely sericeous; calyx-lobes oval or broadly ovate, 3-6 mm. long, usually acute or acuminate, sometimes obtuse, sparsely short-pilose, the venation not reticulate; corolla densely sericeous outside, the tube 6-8 mm. long, the lobes one fifth to one third as long as the tube, triangular-ovate, acute; style pilose above; fruit globose-oval, 12 mm. long, 9-10 mm. wide, sparsely sericeous.
Type locality: Near Cubilquitz, Alta Verapaz, Guatemala, altitude 350 meters. Distribution: Alta Verapaz, Guatemala.
- bibliographic citation
- Paul Carpenter Standley. 1921. RUBIALES; RUBIACEAE (pars). North American flora. vol 32(2). New York Botanical Garden, New York, NY