Perennial herb. Tuber up to about 70 mm diam., somewhat depressed. Stems single or sparingly branched, up to about 0.1 m high (up to 0.2 m in cultivation), hispid-pubescent with white hairs. Leaves shortly petiolate, ± ovate-elliptic, 20-45 x 15-25 mm, hispid-pubescent or pilose on both surfaces. Flowers solitary, lateral at nodes; pedicels about 5 mm long, usually somewhat decurved. Corolla about 15 mm diam., divided to about the middle; externally yellowish green and shortly hairy; tube broadly campanulate or basin-shaped, 4-6 mm deep, 8 mm diam., with circular, greenish to almost black ring-markings within, minutely green-spotted and glabrous around corona, minutely hairy above ring-markings; lobes spreading-recurved, broadly triangular-ovate, cuspidate, with slightly recurved margins and sinuses, 4.5-5 mm long, pilose with whitish or purplish hairs. Corona cupular, ±1.5 mm deep, ± equalling staminal column, forming 5 deep pockets with outer margin emarginate or V-shaped, mainly reddish-brown, sometimes whitish pubescent on rim, confluent on lateral margins with base of inner lobes; inner lobes ± oblong, obtuse, incumbent on anthers. Pollinia ±0.4 x 0.25 mm, compressed, with translucent inner margin, attached by short basal caudicles to carrier; carrier with small basal swellings.
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Perennial herb, up to 100 mm tall. Corolla ± 15 mm in diameter, divided ± halfway down, tube broadly campanulate, surface hairy. Corona producing campanulate tube. Flowers yellowish green outside, greenish to almost black ring-markings within, minutely green-spotted around corona; corona reddish brown.
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