Plant rupicolous. Stem aerial, abbreviated, erect to slightly creeping, brown, internodes short, 0.1 - 0.5 (- 1.0) cm long, 2.0 - 5.0 diam., roots densely covering stem, numerous, white to pale green, thick and succulent, up to 0.8 cm diam. Prophylls and mesophylls 2.0 - 7.0 cm long, ca. 2.0 cm wide, membranaceous, vinaceous green, greyish brown to brown when dried, persistent after decomposing to brown fibres. Leaves ± rosulate; petiole (1.6 -) 2.9 - 17.4 (- 38.9) cm long, 0.2 - 0.9 cm diam., 0.2 - 1.3 times longer than leaf blade, usually deeper than wide, sometimes terete, adaxial side rarely planar, usually canaliculate with channel shallow to deep and broad to narrow, with margins acute to obtuse to narrowly keeled, abaxial side rounded, usually not keeled, basal sheath short, (1.0 -) 1.5 – 3 (- 3.5) cm long; leaf blade (7.0 -) 10.4 - 25.5 (- 75.5) cm long, (2.5 -) 3.5 - 7.4 (- 13.7) cm wide, 2.1 - 4.8 times longer than wide, widest point (= centre of gravity) at (2.6 -) 4.0 - 12.6 (- 18.9) cm from blade base, narrowly oblong, elliptic, ovate or lanceolate, curved to planar in each half, when fresh rigidly coriaceous and brittle and U-shaped to slightly arched in cross-section, base usually obtuse to rounded, sometimes acute, cuneate, truncate or emarginate, apex acute to rounded, sometimes shortly acuminate, or retuse, mucronate, margins planar, adaxial surface dull green, abaxial surface paler and without punctiform glands, finer venation in dried leaves strongly and reticulately prominent but in living plants somewhat obscured and inconspicuous and only slightly impressed on adaxial surface; midvein (primary vein) prominent on both surfaces, adaxially obtuse to rounded and yellowish, abaxially more prominent, ± triangular in cross-section, centrally obtuse to acutely keeled, secondary veins 11 - 16 pairs, not prominent on either surface, poorly differentiated from tertiaries and quaternaries, joining into an inframarginal collective vein 0.1 - 1.3 cm from the blade margin. Inflorescence solitary per leaf, usually overtopping leaves; peduncle (12.4 -) 19.0 - 39.3 (- 58.5) cm long, 0.2 - 0.8 cm diam., green to brown with white to vinaceous points at the apex, terete or with two opposite keels; spathe (1.9 -) 2.8 - 5.3 (- 10.1) cm long, (0.75 -) 1.08 - 1.70 (- 3.6) cm wide, 0.6 - 1.2 times longer than spadix, 1.9 - 4.7 times longer than wide, at anthesis held at 45º - 90º, later usually becoming erect, sometimes clasping the spadix, persistent to fruiting stage, ovate, elliptic, oblong or lanceolate, cymbiform to recurved at acuminate apex, base rounded to emarginate, thickly coriaceous, margin slightly convolute to planar, ventrally purplish brown, vinaceous to yellowish rose, dorsally dark green tinged purplish brown, spathe decurrency acute, obtuse to cuneate, extending for 0.2 - 1.6 cm along peduncle; spadix (2.2 -) 2.8 - 6.1 (- 11.6) cm long, (0.4 -) 0.53 - 0.85 (- 1.4) cm diam., 4.3 - 11.3 times longer than wide, cylindric to conic or rarely clavate, dark, dull purple at anthesis becoming brown afterwards, sessile or with green stipe 0.1 - 2 (- 4.0) cm long. Flowers 0.33 - 0.49 cm long, 0.36 - 0.42 cm wide, relative flower size 2.3 - 3.6 (ratio of spadix and flower width), anthers cream becoming brown when dried, style slightly prolonged, stigma subglobose, ca. 0.1 cm diam., projecting beyond tepals for 0.05 cm. Fruit a berry 0.4 - 1.0 cm long, 0.2 - 0.8 cm wide, broadly obovoid, rounded at apex, green to dark green, whitish at base; seed 0.5 cm long, 0.35 cm wide, oblong-ovate, elliptic to plano-convex in transverse section, yellowish.