Rootstock producing a tuber. Tuber ±50 mm diam., slightly depressed, ±30 mm high, sometimes developing secondary tubers, producing annual stem. Stem branched above ground, dwarf or climbing and twining up to about 1 m tall. Leaves shortly petioled; petiole 2-3 mm long; blade ovate to ovate-lanceolate, ±25 mm long, 12-15 mm broad, apiculate, slightly fleshy, somewhat deflexed, with few hairs on upper surface along margins and on midrib below. Peduncles lateral at nodes, 3-4 mm long, usually 2-flowered, developing successively; pedicels ±3 mm long. Sepals subulate to linear-lanceolate, 3-4 mm long. Corolla in bud with beak narrower than tube, ±30 mm long; tube 18-20 mm long, with basal inflation ±4 mm diam., contracted to ±1.5 mm and then expanded to 2.5 mm at throat but sinuses not prominent, almost entirely purple within base and purple-striped above, with long soft, slightly deflexed white hairs within narrow portion; lobes linear-lanceolate, 10-12 mm long, united at tips to form a narrow cage, minutely ciliate on margins towards base, with longer dark purple hairs from inner keel and with margin slightly revolute in lower part. Corona forming outer cup or basin 1 mm deep with slightly incurved margin, emarginate opposite pockets; inner lobes arising from within base of outer cup, linear, ±2.5 mm long, incumbent-erect, white.
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A succulent vine. It grows 1.5 m high. It has a tuberous root 5-15 cm wide. There can be secondary tubers. It has several very short stems. They are slender. There are only a few leaves. The leaf blade tapers to a triangle shaped point but is fattened below the middle. They are 1.5 cm long and wide. These carry a large number of flowers in groups of 1 or 2. The flowers are purple to green.
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