Epiphytic or terrestrial herbs or shrubs; stems woody nearly to the apex, erect, to 1 m tall, 6-10 mm in diam., brown or scaly and purplish, densely brown hirsute when young. Leaves of a pair strongly unequal; larger leaf oblanceolate, 26.0-36.1 cm long and 3.6-11.2 cm wide, the apex shortly acuminate, oblique at the base, entire to denticulate, above green, glabrous, below green with red patches and more or less adpressed pilose, the hairs reddish or brown, 4-10 celled, more numerous on the veins, also 2-3 celled white appressed hairs; petioles 3-17 mm long; smaller leaves lanceolate, 1.2-2.8 cm long and 2-5 mm wide, acuminate, oblique at the base, green. Flowters several in each axil; bracts, lanceolate, 7-8 mm long, entire, acute, olive yellow, hirsute; pedicels 2-4 mm long, dark reddish brown hirsute; calyx lobes pectinate, 1.3-2.0 cm long, green, dark brown hirsute (dried), yellow hirsute (fresh), the margin 6-11 toothed, the teeth to 6 mm long; corollas yellow to orange, tubular, ca. 3.4 cm long and 5 mm in diam. above the base, becoming ca. 8 mm in diam. at the middle, slightly contracted at the throat, the outside densely sericeous, the lobes subregular, erect, to ca. 3 mm long; filaments pubescent, the anthers included; ovary pilose, the style pubescent, the stigma bibbed. Fruit globose, 1.3 cm long and 9 mm in diam., yellow; seeds fusiform, ca. 1.2 mm long, striate, dark reddish brown.
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