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Perennial herb. Tuber 60-150 mm diam., depressed. Stems 1-3, up to about 100 mm high, producing few to several branches, variably pubescent. Leaves linear-lanceolate to obovate-spathulate, 15-30 mm long, up to 10 mm broad, tapering into a short petiole, usually with somewhat undulate margin, shortly pubescent on both surfaces. Flowers 2-8 together, lateral at nodes; pedicels 10-25 mm long. Sepals lanceolate-subulate, 3-4 mm long. Corolla 30-45 mm long, pubescent outside; tube cup-like, 3-6 mm long, 4 mm diam. at mouth, spotted with purple-brown or black near mouth, yellowish towards base; lobes 20-40 mm long, ovate-lanceolate at base, tailed to apex, with revolute margins, spreading-recurved, with purple-brown spots and greenish towards tips, with short to longish hairs. Corona somewhat cup-shaped, pentagonal, purple-brown; outer lobes consisting of 5 pocket-1ike structures with deltoid-toothed or U-shaped outer margin, confluent on lateral margins with inner lobes; inner lobes incumbent on backs of anthers.
Small, perennial geophyte. Stems 1(-3), erect, 75-100 mm high, produced from a discoid tuber. Leaves linear, linear-lanceolate, ovate to oblong, 3-20 x 12-54 mm, folded upwards, hairy below. Flowers 2-4, clustered at nodes; pedicels 4-6 mm long. Corolla campanulate; tube 4-5 mm long, yellow with transverse purple-brown markings inside, green-speckled with purple-brown outside; lobes spreading, triangular-ovate, 6-7 mm long, margins revolute, dark purple-brown with long vibratile hairs on margins near base. Corona: interstaminal corona lobes fused at base to each other and staminal lobes, deeply cleft in middle; staminal corona lobes triangular, 6 mm tall, apical points connivent over style-stigma-head, forming nectar pockets in between each other.
Like B. decipiens but flowers 35-45 mm diam., cream-coloured to green with purple spots and bars.
