rootstock a tuber with 1 or more erect stems 2–6 in. long, simple, sometimes slightly twining at the apex, under cultivation up to 1 1/2 ft. long and requiring support, or occasionally twining, pubescent when dwarf, glabrous when elongated; leaves fleshy, very shortly petiolate, 1/2–1 1/4 in. long, 1–5 lin. broad, linear to lanceolate, acute, rounded or somewhat cuneate at the base, flat above, slightly convex beneath, shortly and rather thinly pubescent to glabrous on both sides, slightly and minutely ciliate, dark green with whitish veins; peduncles lateral at the nodes, 2–9 lin. long, 2–3-flowered, glabrous; bracts 1/2–1 lin. long, subulate; pedicels 1 1/2–2 1/2 lin. long, glabrous; sepals 1 1/2 lin. long, subulate, glabrous; corolla-tube slightly curved (straight in dried flowers), 7–8 lin. long, about 2 lin. in diam. at the globose-inflated base, cylindric and about 3/4 lin. in diam. above, about 1/4 in. in diam. at the funnel-shaped mouth, outside glabrous, greenish-white at the base, pinkish above, passing into light green at the mouth, inside with a few fine long hairs on the upper part; lobes 2/3– 3/4 lin. long, very narrowly linear from a deltoid base, erect, diverging above (in dried flowers subparallel), with incurved connate tips, keeled on the inner face, which is veined with purple-brown on a greenish ground at the base and entirely purple-brown above, green on the back, ciliate on the margins for a short space just below the middle and on the basal part of the keel with fine simple purple hairs, otherwise glabrous; outer corona somewhat cup-like or its lobes pouch-like, subtruncate or slightly notched, glabrous; inner corona-lobes 1/2– 2/3 lin. long, 1/3 lin. broad across the side, laterally much compressed, broadly falcate, obtuse, connivent over the style-apex at the base, then recurved in a semicircle above the outer corona and dorsally connected to it at the base, glabrous; follicles spreading, 1 1/2 in. or more long, 1/8 in. thick, linear-terete, shortly acute; seeds 1 1/2–1 3/4 lin. long, 2/3– 3/4 lin. broad, ovate, broadly margined, smooth, glabrous, brown. null
