Succulent forming lax clumps to 0.5 m diam. Stems 80-200 mm long, 10-25 mm thick, decumbent with short ascending base, shortly pubescent, green with purple mottling towards tips (if exposed); tubercles 1-2 mm long, obscure, joined into 4 obtuse angles along stem with stem distinctly concave between angles; leaf-rudiments 2-3 mm long. Inflorescence pubescent, 1 per stem arising near base of stems, with 1-3 flowers developing in gradual succession on short stout peduncle up to 10 mm long, with few ovate acute bracts up to 2 mm long; pedicel 20-30 mm long, 5 mm thick, spreading and holding flower facing ± horizontally; sepals 6-14 mm long, 3-5 mm broad at base, ovate to lanceolate, acute. Corolla 70-100 mm long, 90-120 mm diam., campanulate to urceolate; outside dark purple to reddish purple with darker longitudinal veins; inside finely transversely rugulose over whole surface, dark purple to reddish purple, with slightly clavate purple hairs up to 6 mm long concentrated towards centre and along margins of lobes; tube 55-80 mm long, 70-80 mm broad at base, cupular and often narrowing towards mouth; lobes 40-50 mm long, 35-45 mm broad at base, spreading, deltate (sometimes broader than long), acuminate, flat towards bases but convex with margins folded downwards, margins with fine hairs. Corona ±13-15 mm tall, ±10 mm broad, glabrous, with pinkish to yellow stipe 2-3 mm tall; outer lobes ±3 mm long, deeply bifid into attenuate divergent acute lobules, concave above near base, ascending, reddish; inner lobes 9-10 mm long, linear, initially adpressed to backs of anthers then slightly spreading, dorsiventrally flattened, with ±2 mm wide laterally flattened ± equally long dorsal wing fused to it near base, dark purple.
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Shortly decumbent, succulent perennial herb. Stems densely pubescent. Corolla deeply globose-campanulate. Inner corona lobes horn-like, much exceeding anthers, with an erect dorsal wing arising near its base. Flowers dark purple inside; outer lobes of corona brown, inner lobes dark purple.