Stem simple, 6-10 in. high, apparently slightly compressed, glabrous with the exception of a puberulous line down one side; leaves in 4-7 pairs; petiole 1-3 1/2 lin. long; blade 1 1/3-2 1/4 in. long, 1/2-1 1/4 in. broad, ovate, ovate-oblong or oblong-lanceolate, acute, with a somewhat pungent apiculus, rounded to subcordate at the base, glabrous on both sides, slightly scabrid on the slightly thickened margin; umbels 2-4, erect, lateral and terminal, racemose or occasionally subcorymbose, 4-5-flowered; peduncles 1/2-1 1/2 in. long, puberulous down one side; bracts 2-3 lin. long, subulate, glabrous; pedicels 7-10 lin. long, puberulous on one side; sepals as long as or longer than the corolla, suberect, about 1/4 in. long and 3/4 lin. broad, tapering from the base to the very acute apex, more or less revolute at the margins, glabrous or very thinly sprinkled with minute hairs; corolla-lobes erect with more or less incurved tips, 2 1/2-2 3/4 lin. long, 1 lin. broad at the base, thence tapering to the acute apex, flatfish, with revolute margins, glabrous on both sides, apparently purple-brown with green or pale margins on the back, perhaps greenish on the inner face; corona-lobes arising at the base of the staminal column and their margins ascending it as very narrow wings, 1 1/4 lin. long, 3-lobed, erect; middle lobe lanceolate-subulate with a very prominent stout keel on the inner face at the lower part, slightly incurved and reaching to the top of the anthers; lateral lobes much shorter, linear, obtuse, very slightly falcate, quite erect on each side of the central keel, with their flat sides facing each other; staminal column 1 1/4 lin. long; anther-appendages broader than long, reniform, obtuse, very abruptly inflexed over the margin of the truncate style-apex; follicle solitary, 3-3 1/2 in. long, 3/4 in. thick, stoutly fusiform, acute, beset with several series of spine-like processes, 3/4-1 1/2 lin. long, glabrous.
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Perennial, geophytic herb; stems solitary, unbranched, erect, 150-250 mm high. Leaves waxy, erect, lanceolate to ovate, 33-56 x 22-30 mm, base rounded, apex acute; midrib and secondary veins prominent below; petioles 6.6-14.0 mm long. Inflorescences axillary and terminal, up to 4 per stem, racemose with lax umbels, 4-6-flowered. Flowers with pedicels 15-20 mm long. Corolla green, rotate, erect and flexed inwards at narrow apex to form a cage over gynostegial column, narrowly lanceolate, 5-6 x 2 mm, margins strongly revolute. Staminal corona white, complex, lobes dorso-ventrally flattened, trifid with inner lobule linear fleshy and falcate, ± 2.6 mm high, level with style-stigma-head; lateral lobules erect, short and narrowly dentate.