Scandent to twining, evergreen shrublet up to 3 m high, glabrous throughout. Rhizome creeping; roots up to 3 mm thick, terete, with rootlets; mature plants develop spindle-like in-line tubers, 20-100 x 5-17 mm. Stems 2-4 mm thick, basally very finely papillate-ridged, dark olive green to purplish; leaf scales set on very small swellings. Spines absent throughout. Leaf scales triangular, 0.5-3.0 x 0.5-1.0 mm long, dark purple to reddish brown, pale on old stems, triangular, base with small (0.5 mm) soft protuberance, margin entire. Branches up to 400 x ±1 mm, widely placed along stem, arising at right angles to stem, slightly zigzagging, terete, ridged. Branchlets 0.5 mm thick, up to 120 mm long, terete, widely spaced along branches, arising at right angles to branch. Secondary branchlets up to 25 mm long, same thickness as cladodes, arising at right angles to branchlets. Cladodes 1-9 per fascicle, filiform. Terete, falcate, (5-)9-20(-28) mm long, 0.5 mm to hair-like in width, glossy dark green. Flowers 1 or 2(-4), borne in terminal cladode fascicle, bud dark purple, no scent detected. Pedicel 3 mm long, dark purple, articulated in top half, base surrounded by small membranous bracts. Tepals 6, 3 larger tepals 3.0-3.5 x 1.9-2.1 mm and 3 smaller tepals 2.5-3.0 x 1.0-1.5 mm, apex sometimes notched, underside streaked with purple. Stamens 6; filaments 2.75-3.25 mm long, fused at base; anthers pale lemon yellow. Style 1.8-2.5 x 0.5 mm, terete; stigma 3-fid, arms 0.7-1.0 mm long. Ovary trilocular, 0.9-1.1 x 1.5-2.0 mm. Fruit a berry, 6-10 mm diam. with persistent perianth and style, black when ripe.
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