Tall, slender climbers. Rhizome woody, bearing numerous, long roots, ±6 mm in diameter, covered by a velamen of root hairs; side roots short, swollen to form ellipsoid, pointed tubers it 20 mm long, placed close together. Stem erect, straight, ±5 mm in diameter, minutely ribbed and papillate. Spines short, thick, recurved, hard, absent below cladodes. Branches thin, long, similar to stem, bearing short, simple branchlets, some of these bearing cladodes and up to ±90 mm long, others the simple racemes. Cladodes in fascicles of ±6, filiform, appearing somewhat 3-ribbed when pressed, ±10 mm long, apiculate, base obtuse. Racemes 1 or 2 from a node, simple, 30-40 mm long. Flowers closely placed; bracts acuminate, membranous, dark; perianth persistent, tepals white, narrowly obovate, 2 mm long, apex minutely dentate; stalks ±3 mm long, articulated near base, the disc forming a pale ring. Stamens with yellow anthers. Ovary pyriform, ovules 10 cm each cell, style and stigmas short. Berry 5 mm in diameter, red, juicy.
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Tall, slender climber. Cladodes filiform, greyish green, usually narrower than 1 mm. Racemes up to 45 mm long, not interspersed with cladodes. Flowers white.
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