大叶银背藤 da ye yin bei teng

Lianas. Stems terete, ± ashy or whitish tomentose. Petiole 5-13 cm, tomentose; leaf blade broadly ovate to almost circular, 10-25 X 6-20 cm, abaxially ashy or whitish tomentose, adaxially glabrous or sparsely strigose, base cordate, apex acute; lateral veins 10-15 pairs, prominent adaxially. Inflorescences subcapitate cymes, 2.5-7 cm in diam., many flowered; peduncle to 2.5 cm; outer bracts 2.5-4 cm, ovate-elliptic, dull yellowish or grayish pubescent abaxially; inner bracts persistent, smaller. Sepals elliptic-oblong, ± equal, 1-1.2 cm ca. 5 mm, villous abaxially; fruiting sepals enlarged, rose-red, shiny. Corolla whitish, pink, or purple, tubular-funnelform, 4-7 cm, midpetaline bands sparsely whitish villous; limb entire or shallowly lobed. Stamens and pistil included; filaments villous basally; anthers oblong, ca. 3.5 mm. Ovary glabrous. Style ca. 3 cm. Berry enclosed by calyx, red, globose, 8-9 mm in diam. Fl. Aug-Nov, fr. Nov-Mar. 2n = 30*.

Thickets, forests; 800-1500 m. S Guizhou, SW Sichuan, S Yunnan [Bhutan, NE India, Myanmar, Sikkim, N Thailand].