Themistoclesia horquetensis Luteyn & Wilbur

Description

Description: Epiphytic shrub ca. 5 dm tall; stems subterete or bluntly angled, minutely striate but becoming smooth, glaucous, pale reddish-brown when dry, hispidulous with translucent trichomes 0.2-0.3 mm long, glabrous with age. Leaves distichous, ovate, (2.5-)3-4.5 x 1.5-2.5 cm, basally broadly rounded or subtruncate, apically short-acuminate, apiculate, entire, obscurely short-pilose above, especially near the margins, glabrous beneath, pale green above, brown beneath when dry but with a pale greenish-brown area 1 mm broad along the entire margin; 3(-5)-plinerved, the nerves obscure but slightly impressed above, only the midrib slightly raised beneath; petiole subterete, flattened above, 2-3 mm long and 1 mm diam., hispidulous with translucent trichomes 0.2-0.3 mm long. Inflorescence of axillary, solitary flowers, bracts 2-4, minute, basal; floral bract ovate, ciliate, 0.3-0.5 mm long; pedicels angled, striate, glaucous, hispidulous, 1.5-2.5 mm long; bracteoles awl-shaped, ciliate, ca. 0.5 mm long, supramedial. Flowers with the calyx glaucous, sparsely hispidulous with translucent hairs 0.2 mm long; hypanthium obconic, bluntly 5-angled, 2-3 mm long; limb 1.5-1.7 mm long including the apiculate lobes; corolla urceolate, strongly constricted at the throat, 5-5.5 mm long and ca. 2.2 mm diam. near the base, glabrous below, the upper part of the throat and the lobes hispidulous, the lobes ca. 0.5 mm long; stamens 10, 2.5 mm long; filaments alternately ca. 1.5 and 2 mm long, glabrous; anther 1-1.2 mm long inserted near the base; tubules equaling the thecae; style ca. 3.5 mm long, glabrous. Berry ca. 5 mm in diam.

Distribution: Costa Rica and Panama. Rare.

Type: Panama. Chiriquí: S slope of Cerro Horqueta, 2200 m, Wilbur et al. 13491 (holotype, DUKE; isotype, NY).

Map Distribution

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