Hoffmannia orizabensis Standl.

Hoffmannia orizabensis Standley, Contr. U. S. Nat. Herb. 20:
205. 1919. A low shrub, the branches slender, decumbent, rufous-villosulous when young; leaves opposite, the slender petioles 0.5-2 cm. long, rufous-villosulous or puberulent; leaf-blades elliptic or elliptic-oblong, 3-8 cm. long, 1-3 cm. wide, acute or subacuminate, acute at the base, membranaceous, deep-green above, rufous-villosulous along the costa, with numerous
conspicuous white cystoliths, paler beneath, rufous-villosulous along the veins, the slender
costa prominent, the lateral nerves slender, prominulous, 7-9 pairs, ascending, strongly arcuate;
cymes 4-flowered, the slender peduncles 1 cm. long, rufous-villosulous, the slender pedicels
2-3 mm. long; calyx and hypanthium sparsely villosulous, the hypanthium oblong-turbinate,
2.3 mm. long, the calyx-lobes narrowly triangular, acute; corolla 12-13 mm. long, sparsely
villosulous outside, the throat ampliate, the lobes ovate-oval, obtuse or rounded, half as long
as the tube; anthers obtuse.
Type locality: Region of Orizaba, Veracruz. Distribution: Known only from the type locality.