Rootstock producing a tuber. Tuber 35—45 mm diam., slightly broader than high. Stem annual, ±300 mm tall and 1,5 mm thick, minutely pubescent in upper portion, unbranched, internodes 10-20 mm long. Leaves scale-like at first, upper ones linear, up to 120 x 5 mm, with midrib prominent down lower surface. Flowers solitary, extra-axillary; pedicel ±17,5 mm long, thinly puberulous. Sepals linear, acuminate, up to about 10 mm long. Corolla up to about 65 mm long, flat-topped, 5-angled in bud; tube ±47,5 mm long, with inflated base ±7 mm diam., narrowed to 3,5 mm and then expanded to 17,5 mm at throat, pale green, with purplish brown mottling outside, inside inflation white at base, purple-ribbed above, with long purple hairs within throat and on base of lobes; lobes united at tips into a somewhat cage-like structure, 17 mm long, 6 mm broad near apex, becoming strongly replicate and keeled down face, slightly twisted at middle, with long, somewhat clavate hairs towards tips, with inner face pale green near base, transversely white-banded, followed by dark purple and green in upper half. Corona with outer lobes bifid, suberect, 1,5 mm long, with lobules 1 mm long, with few long radiating white hairs near tips; confluent at base with inner lobes; inner lobes, incumbent-erect, 4 mm long.
