Quaqua aurea (C.A.Lückh.) Plowes

Small succulent forming clump 60-300 mm diam. Stems 50-150 mm long, 15-25 mm thick, decumbent, grey-green; tubercles 3-6 mm long, conical, spreading, joined near base into 4-5 angles along stem, each tipped with sharp yellow tooth, usually with 2 denticles near base. Inflorescences of 3-10 ± simultaneously opening flowers towards apex of stem; pedicel 1-2 mm long, 1 mm thick, holding flower facing horizontally; sepals ±1.5 mm long, 1 mm broad at base, lanceolate. Corolla 15-22 mm diam., campanulate to nearly rotate; outside pinkish becoming paler towards base; inside white in centre becoming cream to pale yellow towards tips and slightly greenish towards edges, covered with minute ascending bristles except towards margins and apices of lobes; tube ±1.0 mm deep, broadly V-shaped, nearly containing column; lobes 5-9 mm long, 2-3 mm broad at base, always somewhat ascending, margins only slightly folded back with folding starting somewhat above base, obtuse tip slightly incurved. Corona 1.3-1.7 mm tall, 2.5-2.9 mm broad, bright yellow, gradually narrowing to base and without stipe; outer lobes ±0.8 mm long, erect, bifid into erect slightly diverging deltoid acute teeth, fused laterally in lower half to bases of inner lobes and so forming pouch enclosing guide-rails; inner lobes <1 mm long, adpressed to backs of anthers and slightly exceeding them, linear, obtuse to truncate, dorsiventrally flattened, dorsally swollen near base but otherwise without dorsal projection.