Compact clump-forming succulent up to 300 mm diam. Stems 40-100 mm (-0.3 m) long, 10-15 mm thick, erect to nearly prostrate with ascending tips, 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 1-2 per stem arising mainly towards base, each bearing 1-2 flowers developing in gradual succession on peduncle 5-10 mm long; pedicel (30-)45-190 mm long, 1.5-4.0 mm thick (narrowing towards base of flower), erect to prostrate (then with upturned apex holding flower facing upwards); sepals 4-6 mm long, 1.5 mm broad at base, narrowly deltoid, acute. Corolla 30-70 mm diam., rotate, deeply lobed; outside pale green with darker slightly impressed veins; inside olive-green or yellow-brown to maroon on upper two-thirds of lobes, below this whitish finely flecked with maroon and becoming darker towards gynostegium, smooth to obscurely longitudinally rugulose towards tips of lobes, finely reticulately rugulose in pale area around gynostegium and with dense crust of small nearly spherical to elongated clavate papillae around mouth of tube; tube ±2 mm deep, pentagonal, formed by abrupt annular thickening near base of otherwise ± flat corolla, with mouth somewhat closed around gynostegium by overhanging ledge from annulus; lobes 17-30 mm long, 11-16 mm broad at base, ascending to spreading, narrowly ovate and much narrowed by strongly recurved margins, acute, with dense patch of dark purple clavate to filiform-attenuate vibratile cilia up to 2.5 mm long along margins near base. Corona ±7 mm tall, 10-11 mm broad, mostly shiny purplish black, raised on short very stout stipe; outer lobes ±2 mm long, ascending, ± rectangular, with truncate to subacute often crenulate apex, channelled down upper surface, often pale brown; inner lobes 5-6 mm long, adpressed to backs of anthers in lower half of anthers, then erect and slightly connivent, diverging towards apices, dorsiventrally flattened for lower 1-2 mm then swelling to markedly clavate irregularly and acutely prominently tuberculate or rugulose apex, with nearly identical (except laterally flattened towards base and generally somewhat stouter and slightly longer) ascending then recurving clavate dorsal horn arising near base, lobe sometimes somewhat paler than dorsal horn.
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Clump-forming, glabrous succulent, up to 100 x 300 mm, stems obtusely 4-angled, obscurely tuberculate, up to 15 mm diam. Flowers 1 or 2, near stem base, on a peduncle up to 10 mm long, pedicels 45-190 mm long, erect to spreading. Corolla rotate, 30-70 mm diam., inside smooth to obscurely rugulose and glabrous, with small, clavate papillae around corona, red-brown to yellow, mottled with white, tube up to 2 mm long, lobes spreading, narrowly ovate, 17-30 x 11-16 mm, with marginal cilia. Corona shiny blackish, outer lobes rectangular, channelled above, inner rising centrally in column, clavate, with similar clavate dorsal horn.
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