Glabrous. Twigs terete, with very many small lenticels; nodes with glands and a dark transversal line. Leaves (10-)15-20 cm long; petiole 2½-8 cm; rachis c. 4-5 cm; petiolules of lower pair of leaflets 4-12 mm, of upper pair (0-)l-2 mm. Leaflets herbaceous, slightly unequal-sided, ovate-oblong, long-acuminate, 5-8 by 2-3 cm; nerves 4-5 pairs; undersurface with scattered, small, rimmed-crateri-form glands, upper surface with microscopical pitted-punctate glands. Rachis rather densely flowered, microscopically puberulous, 2-7 cm; peduncle 2 cm, with barren bracts. Bracts linear, 2 mm. Pedicels thin, 5-8 mm, with 1-2 minute bracteoles in the lower half. Calyx 6 mm, purplish, bluntly 5-ribbed, inside with dark red microscopical capitate-glandular hairs. Corolla 4½-5 cm, tube yellow, lobes whitish turning pale lilac, c. 1 cm ø, 2 upper recurved, 3 lower erect; outside on transition of tube and lobes scattered, rather large, brown red glands; basal tube 1½ cm by 2 mm, near the insertion of the stamens scattered microscopical red-tipped, capitate-glandular hairs as in the calyx tube. Filaments glabrous, 12 and 14 mm; rudiment 5 mm, with reflexed apex; anther-cells 2½ mm, connective appendage linear, 1 mm. Ovary elliptic 1½ by 1 mm; style 2 cm; stigmatic lobes elliptic, 1½ mm.
Not well noted, 3 collections, all from 1898-1902;.fl. June, July, Nov., and a cultivated specimen in Hort. Sing., Lawn 0, in Febr.
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