Rootstock producing a cluster of succulent, fusiform roots. Stem probably annual, up to about 0.45 m long, not visibly twining, sparingly branched, glabrous. Leaves linear, 30-60 mm long, somewhat fleshy, margins recurved (in dry state), glabrous. Flowers pedunculate, produced laterally at nodes; peduncles 1-flowered, 10-20 mm long, with one terminal filamentous bract ±3 mm long; pedicel 3-7 mm long. Sepals linear-lanceolate, 5 mm long, glabrous. Corolla ±25 mm long; tube ±13 mm long, straight or slightly curved, with globose-elliptic inflation at base 5-6 mm diam., narrowed to about 3 mm above and then gradually expanding to 8-9 mm diam. at throat, longitudinally veined (purple ?); lobes twisted in bud, up to 12 mm long, with terminal knob, becoming free, spreading-erect, narrowly linear from a deltoid base, with long, cylindric, dark-tipped hairs from inner surface and with a mop of long, filiform hairs from the somewhat club-shaped apex. Corona shortly united at base, produced into 5 pairs of erect lobes ±1.5 mm long, with adhering club-shaped heads, long-hairy throughout; inner lobes linear, erect, ±2 mm long, glabrous. Follicles 1-2, 130-140 mm long, 4-5 mm diam.
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Slender geophyte or climber to 50 cm; sap clear. Leaves opposite, linear. Flowers 25-45 mm, tube funnel-shaped above, petals slender with clavate, ciliate apices.