Clethra alcoceri Greenm.

Clethra alcoceri Greenm. Proc. Am. Acad. 41: 240. 1905
A small tree, with densely brown-tomentulose twigs. Leaves elliptic-lanceolate to oblongobovate, subcoriaceous, 14 cm. long or less, 2-6 cm. wide, obtuse, mucronate, or short-acuminate at the apex, narrowed but obtuse at the base, low-dentate or denticulate with glandtipped teeth, dark-green, minutely stellate-pubescent or becoming glabrate above, paler, finely stellate-pubescent and sparingly brown-pubescent on the prominent veins beneath, the stout brown-pubescent petioles about 1 cm. long; racemes several, densely tomentosepubescent, 1-2 dm. long; pedicels only 1-3 mm. long; flowers nodding; calyx about 3 mm. long, its segments ovate, obtuse, densely tomentulose; petals obovate, obtuse, subfimbriate; ovary densely pubescent; filaments glabrous.
Type locality: Barranca near Trinidad Iron Works, Hidalgo. Distribution: Known only from the type locality.