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Family:

Ericaceae (Magnoliophyta)

Primary Citation:

Fl. Ecuador 54: 376. 1996

Accepted Name:

This name is currently accepted.

Type Specimens:

Specimen 1: Holotype -- J. L. Luteyn

Description:

Description: Terrestrial or epiphytic shrub with branches to 2 m long; stem subterete, striate, puberulent; bark cracking longitudinally; twigs terete to subterete, striate, ribbed, or angled, densely short-hirsute with flat, reddish-ferruginous hairs to ca. 0.6 mm long. Leaves coriaceous, flat to slightly concave, ovate, 1.8-6 x 0.7-3 cm, base rounded, apex acuminate to caudate-acuminate, the tip short-mucronate, margin flat to slightly revolute, glabrous to weakly short-hirsute above, sometimes only along midrib and margin above, weakly hirsute beneath except moderately short-hirsute along midrib benath with hairs as on twigs; 3 (5-)-plinerved from near the base, midrib strongly and conspicuously impressed above and raised beneath, lateral nerves weakly impressed above, inconspicuous to obscure beneath, reticulate veinlets obscure on both surfaces; petiole terete, rugose, 1.5-2(-3) mm long, short-pilose to densely short-hirsute. Inflorescence axillary, solitary or sometimes 2 per axil, nearly hidden by the leaves, short-racemose, 1-4-flowered; rachis terete to subterete, thin, 3-9 mm long, densely short-hirsute with hairs to 0.5 mm long; floral bract narrowly ovate, acuminate, 0.5-1 mm long, short-hirsute; pedicel terete, 7-10 mm long, short-hirsute; bracteoles located midway below the middle and base of the pedicel, narrowly ovate to aristate, 0.4-0.8 mm long, short-hirsute. Flowers with calyx 3.2-4.5 mm long, short-hirsute; hypanthium turbinate, 2-3 mm long; limb campanulate-spreading, 1.2-1.5 mm long; lobes apiculate, ca. 0.2 mm long; sinuses flat; corolla cylindric-urceolate, terete, 9-13 mm long and 3-4 mm diam., glabrous, cream-colored, the lobes triangular, acute, 0.8-1.5 mm long, weakly short-hirsute; stamen 8-9 mm long; filaments 4-4.5 mm long, glabrous; anther ca. 5.5 mm long; thecae ca. 2 mm long, the base minutely mucronate; tubules ca. 3.5 mm long, dehiscing by clefts ca. 1 mm long; nectariferous disc annular-pulvinate, glabrous; style 9-10 mm long, glabrous. Berry not seen.

Distribution: Endemic to Ecuador; premontane wet forest to montane cloud forest, at 1400-3000 m altitude. Rare.

Type: Ecuador. Napo: Baeza-Tena road, 0-5 km S of Cosanga, 1975-2225 m, 9 Jan 1979 (fl), Luteyn & Lebrón-Luteyn 6730 (holotype, NY; isotypes, AAU, GB, QCA, US).

Flora and Monograph Treatment(s):

Themistoclesia orientalis Luteyn: [Article] 1996. Fl. Ecuador. 54: 376.