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Perennial succulent, scrambling or pendent from rock faces, 0.4-0.8 m long, sparsely branched from basal tubers, old leaves not deciduous, no adventitious roots at nodes. Leaves lower leaves elliptic, petioles 3 mm long; upper leaves sessile, ovate, 20-40 x 10-25 mm, acute or acuminate, constricted towards petiole, serrate, yellowish green tinged red along margins. Inflorescence a rounded to flat-topped thyrse; flowers spreading at right angles; peduncle absent. Calyx fleshy, glabrous, green. Corolla star-shaped, scarcely fused, white, rarely tinged red; lobes 3-4 mm long, pointed, spreading. Flowering time Mar., Apr.
Leaves 2-4·5(6) x 1·2-2·5(3·5) cm., ovate to elliptic, acute to acuminate at the apex, serrate at the margin with the teeth narrowly white-cartilaginous, the lower-ones petiolate, the uppermost subsessile and with axillary fascicles of minute leaves, flat, slightly fleshy, shining, green, sometimes tinged with red mainly the teeth, spreading; petiole usually not longer than 4 mm. somewhat thick, slightly connate at the base with the opposite one.
Stem up to 1 m. or more long, trailing or climbing, simple or loosely branched, terete, reddish or with elongate whitish spots, leafless towards the base, sparsely leafy upwards; internodes up to 10 cm. long, longer to subequalling the leaves.
Corolla (4) 6-8 mm. long white or ± tinged with red; petals c. 1·5 mm. wide, lanceolate, ± attenuate towards the ± acute apex, smooth, not dorsally mucronate below the apex, spreading, connate for c. 0·5 mm. at the base.
Calyx 1·75-2·5 mm. high, equalling 1/3-1/4 the length of the corolla; sepals c. 0·5 mm. wide at the base, lanceolate-linear, acute or obtusiuscule, entire, narrowly hyaline-margined, convex on the back, red or green.
Flowers 5-merous in terminal lax to ± dense paniculate inflorescences; peduncle terete, red; bracts lanceolate-linear, acute; pedicels 4-6 mm. long.
Stamens with filaments 1·25-4·5 mm. long and suborbicular or lanceolate anthers 0·5-0·75 mm. long, at level of 1/3-1/2 of the corolla.
Follicles c. 3 mm. long, very attenuate into the styles; styles 1·5-2·5 mm. long; stigmas at level of 3/4 of corolla length.
A sarmentose everywhere glabrous perennial.
Floral buds fusiform.
