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Perennial herb. Tuber 50-90 mm diam., depressed. Stems 1-3, up to about 0.15 m tall, shortly and softly pubescent, moderately branched towards base, leafy. Leaves oblong, oblong-elliptic or subfalcate, subsessile, 7-30 mm long, up to 8 mm broad, pubescent. Flowers 2-5 together; pedicels 2-5 mm long. Sepals lanceolate, 2-4 mm long. Corolla 15-25 mm long, shortly tubular; tube up to about 5 mm long, 4 mm wide at mouth; lobes united at tips, 12-20 mm long, linear-filiform with recurved margins, puberulous outside, glabrous within. Corona tubular at base, producing 5 outer lobes, bifid or deeply 2-lobuled, glabrous or with few hairs; inner lobes incumbent on backs of anthers.
Like B. circinatum but flowers 15-25 mm long and with tube 3-5 mm long.
