Suffrutescent unbranched herbs, to 50 cm tall; stems terete, sparsely to densely villous. Petiole 0.8-2.5 cm, villous; leaf blade drying papery, adaxially black, and abaxially pale, lanceolate to ovate, 5-12 × 2.5-4 cm, glabrous except pilose on principal veins, base cuneate to obtuse, apex acuminate or acute; secondary veins 5-9 pairs; stipules caducous, not seen. Peduncle less than 0.5 cm; involucral bracts several, narrowly lanceolate or linear, 10-15 mm, acuminate; bracteoles narrowly lanceolate or linear, 5-6 mm. Calyx with hypanthium portion ca. 1 mm; lobes 5, narrowly lanceolate, 1.4-2 mm, slightly unequal. Corolla in bud yellow, tubular, and with 5 sharp longitudinal ridges; tube ca. 3 mm; lobes 5, triangular, ca. 1 mm, winged abaxially, apex rostrate-incurved. Fruit not seen. Fl. Apr.
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