Donnellyanthus deamii (Donn. Sm.) Borhidi

Rondeletia deamii (Donn. Smith) Standley
Botivardia Deamii Donn. Smith, Bot. Gaz. 49: 455. 1910.
Shrub, the branches slender, terete, reddish-brown or grayish, sparsely short-pilose when young; stipules deltoid, acute, about 1 mm. long, erect; leaves opposite, the petioles stout, 1-2 mm. long, short-pilose, the blades ovate-orbicular, oval-ovate, or ovate, 2.5-6.5 cm. long, 1.2-2.5 cm. wide, broadly rounded to acute at the base, abruptly acuminate at the apex or attenuate, with an obtuse or acutish acumen, thin, glabrous above or very minutely and sparsely pilose, minutely pilose beneath, especially along the veins, the venation scarcely prominulous beneath, the lateral veins very slender, arcuate, ascending at an angle of 50° or less; inflorescence mostly of terminal 3-flowered cymes, these sessile or slender-pedunculate, the pedicels slender, 8 mm. long or shorter, long-pedicellate, solitary flowers sometimes present in the axils of the uppermost leaves; bracts sometimes large and leaf-like, the bractlets subulate or wanting; hypanthium minutely pilose; calyx-lobes 4, linear, 4-2 mm. long, one of them usually elongate, foliaceous, linear or lance-elliptic, up to 4 mm. long, acute or obtuse, erect or spreading; corolla sparsely short-pilose outside, the tube slender, 7-12 mm. long, naked in the throat, the 4 lobes rounded-oblong, 3 mm. long, spreading, minutely papillose within; anthers and style included, or the anthers subexserted.
Type locality: Base of a precipice near Fiscal, Guatemala, altitude 1110 meters. Distribution: Oaxaca and Guatemala.