Sommera grandis (Bartl. ex DC.) Standl.

Sommera subcordata Standley, sp. nov
Branchlets stout, glabrous; petioles 1.8-2.5 cm. long, glabrous or very sparsely pilose with spreading hairs; leaf-blades oval-obovate, about 15 cm. long and 8 cm. wide, subcordate or rounded at the base, abruptly short-acuminate at the apex, bright-green above, sublustrous, glabrous, slightly paler beneath, sparsely pilose with short stiff hairs, the lateral veins promin-
ulous, slender, divergent or ascending at angle of 50° or more, arcuate; inflorescence cymose-
corymbose, few-flowered, the peduncles about 1 cm. long, stout, the flowers sessile; bracts
oblong-lanceolate, obtuse or acute, 6-15 mm. long; hypanthium 3-4 mm. long, appressed-
pilose with fulvous hairs; calyx-lobes oval or rounded-oval, 2.5-3.5 mm. long, rounded at the
apex, reticulate-veined; corolla densely appressed-pilose.
Type collected at Colomas, Sinaloa, 1897, /. N. Rose (U. S. Nat. Herb. wo. 866799). Distribution: Sinaloa.

Sommera grandis (Bartl.) Standley
Petesia grandis Bartl.; DC. Prodr. 4: 395. 1830.
Petesia minor Griseb. Bonplandia 6: 8. 1858.
Sommera Donnell-Smilhii Standley, Contr. U. S. Nat. Herb. 17: 436. 1914.
Sommera mesochora Standley, Contr. U. S. Nat. Herb. 17: 437. 1914.
Shrub or small tree, sometimes 8 meters high, the branches reddish-brown, sparsely lenticellate, densely pilose when young with appressed or ascending fulvous hairs; stipules lance-ovate or narrowly lanceolate, 1.5-3.5 cm. long, attenuate, brown, more or less strigose; petioles stout, 0.8-2.5 cm. long, fulvous-pilose with appressed or spreading hairs; leaf-blades obovate, rhombic-obovate, obovate-oval, oval, or oblanceolate-oblong, 10-22 cm. long, 3.5— 10 cm. wide, rounded to attenuate at the base, abruptly acuminate at the apex, bright-green above, pilose, even in age, with minute appressed hairs, slightly paler beneath, sparsely or densely pilose with usually appressed hairs, the lateral veins prominent, ascending or subascending, subarcuate; inflorescence cymose-corymbose, usually many-flowered, the peduncles 0.5-1.5 cm. long, the flowers subsessile or the fruiting pedicels 3-8 mm. long; bracts linear to lance-ovate, acute or attenuate, pilose; hypanthium densely appressed-pilose, 3-4 mm. long; calyx-lobes suborbicular to ovate-oblong, 2.5-4 mm. long, rounded or obtuse at the apex or rarely acutish, reticulate-veined, appressed-pilose; corolla white, sericeous outside, 5-8 mm. long, the lobes about one third as long as the tube, oblong or ovate, obtuse; fruit subglobose, about 9 mm. in diameter, sparsely pilose; seeds brown, about 1.5 mm. long.
Type locality: Mexico. Distribution: Colima to Panama.