Tromotriche umdausensis (Nel) Bruyns

Compact clump-forming small succulent up to 150(-300) mm diam. Stems 30-100 mm long, 6-15 mm thick, erect to spreading, tapering slightly towards apex, pale green to reddish; tubercles very obscure so stem obscurely and very obtusely 4-angled to almost cylindrical, without apical tooth. Inflorescences 1-3 arising randomly on stem, each bearing 1-2 flowers developing in gradual succession on peduncle up to 5 mm long; pedicel 20-30(-50) mm long, 2 mm thick, ascending then becoming horizontal at apex so that flower facing horizontally or slightly nodding; sepals 3-4 mm long, 1.0-1.5 mm broad at base, narrowly deltoid, acute. Corolla 15-30 mm diam., campanulate; outside cream to reddish with slightly darker impressed veins (5 per lobe); inside in tube usually red to brown reticulately to radially marked with white to yellow, lobes uniformly yellow to red-brown or brown and often faintly reticulately mottled and rugulose with cream or white, shallowly rugulose in tube where rugulosities ± radially arranged, more deeply rugulose on lobes, with small nearly spherical to elongated clavate papillae towards base of tube; tube 5-8 mm long, 10-12 mm broad, cupular, with abrupt annular thickening around corona near base; lobes 9-12 mm long, 5-10 mm broad at base, ascending to spreading, ovate, acute, margins strongly folded back, eciliate. Corona ±3 mm tall, 5 mm broad, purple-black to pale brown, raised on short stout stipe; outer lobes ±1 mm long, ascending, fused to dorsal bases of inner lobes so as to form pouch between adjacent inner lobes, with crenulate-dentate margin and sometimes longer tooth in middle; inner lobes 0.7-1.0 mm long, adpressed to backs of anthers and seldom exceeding them, dorsiventrally flattened, deltoid, obtuse (acute), with obtuse dorsal gibbosity near base in series with and fused to outer lobes.