Stems viny, to 5 m, cobwebby-tomentose and pilose. Leaf blade 1-pinnate; leaflets 4-10 plus additional tendril-like terminal leaflet, narrowly to broadly ovate, unlobed or 2-3-lobed, 3.5-10 × 2-6.5 cm, thin, reticulate; surfaces abaxially densely silky-pilose, not glaucous. Inflorescences axillary, 1-5-flowered; bracts at or near base of peduncle/pedicel. Flowers urn-shaped; sepals pinkish, suffused with green, oblong-lanceolate, 2-2.5 cm, margins not expanded, thick, not crispate, tomentose, tips acuminate, slightly spreading to short-reflexed, abaxially densely silky-pubescent. Achenes: bodies silky-pubescent; beak 3-3.5 cm, plumose.
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