rootstock a flattened tuber; stem herbaceous, up to 3 or 4 ft. long, twining, pubescent; leaves herbaceous; petiole 1/3–1 1/4 in. long, pubescent; blade 3/4–1 3/4 in. long, 1/3–1 1/6 in. broad, cordate-ovate or lanceolate-ovate, acute or somewhat acuminate, cordate or rounded at the base, entire, variably toothed, or somewhat lobed and the margin cut into numerous short linear-oblong lobules, more or less pubescent or rarely subglabrous on both sides; cymes sessile or subsessile at the nodes, 2–4-flowered; pedicels 1/4– 2/3 in. long, villous-pubescent; sepals 3 1/4–4 1/2 lin. long, 1/2 lin. broad at the base, subulate, pubescent; corolla-tube 1–1 1/2 in. long, bottle-shaped, the basal 2/3 inflated cylindric-oblong and 1/4– 1/3 in. in diam., narrowed above into a cylindric neck 1–1 1/4 lin. in diam., abruptly dilated to 1/4 in. in diam. at the mouth, glabrous outside and within, except at the slightly pubescent inner surface of the mouth, white or greenish-white on the basal part, striate or dotted with light or dark purple-brown or violet on the upper 2/3, dark (purple?) at the base inside; lobes 4 1/2–5 lin. long, 1 1/2 lin. broad at the very base, linear, with reflexed margins, connate at the tips, in dried specimens usually appearing to be connivent-erect, but when alive, they are horizontally spreading at the base and horizontally incurved at the middle, almost black, with 2 central green longitudinal stripes on the inner face, glabrous, not ciliate; outer corona-lobes 1/2 lin. long, deltoid, acute, ascending, glabrous, white; inner corona-lobes 1 lin. long, linear or slightly spathulate-linear, obtuse, connivent at the base, then slightly diverging and in a broad curve again connivent at the tips, blackish at the basal part, white above; follicles erect, subparallel, 3 1/2–4 in. long, 1/8 in. thick, terete, tapering into a beak, smooth, glabrous. null
