Epiphytic or terrestrial shrub 0.6-2.0 m high; branchlets subterete, glabrous to rarely moderately puberulent. Leaf blades oblong to ovate oblong, rarely elliptic, (2-)4-8(-13.5) cm long, (1.2-)2-5(-7.5) cm wide, basally cuneate to broadly rounded, apically broadly rounded to acute, marginally subentire and slightly revolute, usually glabrous both above and below but occasionally pu-berulent or spreading short pubescent on the lower surface near the base, oc-casionally sparsely punctate above; pinnately veined, the midvein slightly im-pressed above and prominently elevated beneath, the 2-4, arcuate-ascending, secondary veins on each side plane above and prominently elevated beneath, reticulate veinlets also flush above and slightly elevated beneath; petioles rugose, usually glabrous, 4-10 mm long, narrowly winged above. Inflorescences axillary near the ends of the branches, racemose, 4-20-flowered, glabrous throughout or occasionally moderately spreading short pubescent; rachis striate, 1-8 cm long; pedicels striate, glabrous to puberulous, reddish, (7-) 10-24 mm long; bract single, deltoid or ovate to oblong, often ciliate, 2-5(-7) mm long; bracteoles 2, broadly deltoid to oblong, 1-2 (-3) mm long. Flowers with the hypanthium short cylindric, ca. 2.5 mm long, 4 mm in diameter, deep maroon; calyx limb flaring, 2-5 mm long including the lobes, the lobes 5, apiculate, ca. 1 mm long; corolla (12-)18-22 mm long, 6 mm in diameter, cylindric urceolate, deep red or pinkish red, the tube contracting at the throat to ca. 3 mm in diameter, the lobes deltoid to oblong, acute, 1.5-2.5 mm long, pale red, pink to white, ciliate; stamens 10, 9-14 mm long, the filaments distinct, glabrous or marginally short pilose distally, 2-4 mm long; the anther sacs basally and apically incurved, 4-7 mm long, the tubules laterally connate throughout, rarely distinct nearly to the FIGURE 11. Macleania rupestris (H.B.K.) A. C. Smith.-A. Habit (X 1).-B-C. Stamens.-B. Lateral view (x525).-C. Ventral view (X59,). [After Wilbur & Teeri 13077 (DUKE).] base, rigidly and narrowly cylindric conical, 3.5-6 mm long, opening by elongate, introrse clefts about '/3-1/2 the length of the tubule; stigma truncate, the style glabrous. Berry dark bluish black.
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A shrub. It can grow in the soil or attached to other plants. It can grow to 2 m tall. It can have climbing branches 6 m long. It can have a woody tuber at the base up to 1 m across. The fruit are round and 1 cm across.
Lower montane dry forest, premontane dry and wet forest, montane moist, wet and rainforest, subalpine rainforest, Polylepis forest, to humid páramo, at elevations of 2,000-4,267 metres.
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A tropical plant. It grows in lower dry mountain forest. It grows between 2,000-4,267 m above sea level.