勐腊银背藤 meng la yin bei teng

Lianas 3-4 m tall. Stems terete, axial parts yellowish tomentose, young parts densely so, older stems grayish. Petiole 1-2 cm; leaf blade narrowly oblong or narrowly oblong-lanceolate, 6.5-12.5 X 2-3 cm, abaxially densely yellowish sericeous-tomentose, adaxially glabrous, base broadly cuneate or rounded, apex acute or acuminate; lateral veins 9-11 pairs. Cymes subcapitate, 7-9-flowered; peduncle 1-3 cm, angular; bracts ovate or ovate-triangular, 2-3.5 X 2-2.5 mm, densely yellowish tomentose abaxially, ?persistent. Sepals elliptic or ovate-oblong, unequal, tomentose similar to bracts, outer 3 ca. 13 X 6.5 mm, inner 2 ca. 9.5 X 3.5 mm. Corolla purple, tubular-funnelform, 3.8-5 cm, midpetaline bands sparsely yellowish villous; limb 2.5-3 cm wide, entire or slightly lobed. Stamens and pistil included, much shorter than corolla; filaments unequal, 1.7-2.2 cm, glandular pubescent basally; anthers sagittate, 4.5-5 mm. Disc ringlike, ca. 1 mm high. Ovary conical, glabrous. Style ca. 3.1 cm, jointed at base; stigma capitate, 2-lobed. Fruit unknown. Fl. Oct.

* Ravines, waysides. S Yunnan (Mengla Xian).