Arachnothryx scabra (Hemsl.) Borhidi

Rondeletia scabra Hemsl. Diag. PI. Nov. 29. 1879
Shrub or tree, the branches terete, pilose when young; stipules lance-subulate, 6-8 mm. long; leaves opposite, the petioles 6-12 mm. long, the blades ovate-oblong, 7.5-10 cm. long, attenuate at the base, acute at the apex, subcoriaceous, scabrid above, hispid-pilose beneath, especially along the veins, the lateral veins prominent beneath; inflorescence axillary, usually 3-flowered, short-pedunculate, the flowers short-pedicellate; hypanthium strigillose; calyxlobes 4, lance-subulate, about 12 mm. long, about equaling the corolla; corolla strigillose-pilose outside, the tube cylindric, 12 mm. long, puberulent within, the 4 lobes rounded, the throat naked.
Type locality: Sierra de San Pedro Nolasco, Oaxaca. Distribution: Known only from the type locality.