Succulent scrambler or twiner, stems more than 0.5 cm thick, roots fleshy, tapered at each end. Leaves rudimentary, cordate-ovate to deltoid, up to 3 mm long and 2 mm wide, fleshy. Flowers 60-70 mm long, flower stalks 7-10 mm long. Corolla tube straight or slightly curved upwards, 30-45 mm long, pale green-white, with slight basal inflation; lobes free above, white with pale purple, greenish yellow or brown-purple markings.
S Africa
C. tenuis N.E. Br. from S Africa is a succulent twiner, with roots forming a solid rounded tuber. Leaves well developed, linear to lanceolate-ovate, up to 50 mm long and 6 mm wide, membranous. Flowers 20-25 mm long, flower stalks 3-4 mm long. Corolla tube more or less straight, 15-19 mm long, cream to pale pink-purple, with globose basal inflation; lobes linear-spathulate, fused at the tip, forming a cage that is only slightly expanded, purplish, rough-hairy all over, not extended into a 5-winged head.
Source: (2002). Asclepiadaceae. In: . Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.
