Glab. herb up to 20 cm. tall, us. less; stock long, stout, often branched above. Lvs in clusters on flattened petioles up to 6 cm. long; ochrea up to 3 cm. long; lamina (2)-5-8-(12) × (1)-2-4 cm., narrow-oblong, cuneate to truncate at base; margins subcrenate-sinuate. Infl. lvs narrow-oblong to linear, decreasing from 3 cm. Infl. of dense axillary clusters up to ± 16-fld, on short stout, simple or 1-2-branched axis. Fls on short ± deflexed pedicels to subsessile. Outer tepals ± 2 mm. long, oblong; inner ovate-lanceolate ± 4 mm. long; tubercle ± 1 mm. long. Fr. c. 2-2.5 × 1 mm., pale brown, sublustrous, triquetrous, tightly invested by thickened per.; fimbriate stigma persistent.

2n = 40

n = 20

Glabrous herb 1-12-(20) cm tall; rootstock long, stout, often branched above. Lvs in clusters, with flattened petioles to 6 cm long. Lamina (1)-2-9-(12) × (0.5)-1-3-(5) cm, narrow-oblong, oblong, or oblong-elliptic; margins subcrenate to sinuate; base cuneate to truncate; apex rounded to obtuse. Ochreae prominent, long. Infl. lvs narrower, decreasing in size upwards. Infl. of dense axillary clusters of up to c. 16 ☿ fls; axes 1-2-branched, short, stout; pedicels short or very short, glabrous. Outer perianth segments ± 2 mm long, oblong, remaining forward pointing at fruiting; inner segments ovate-lanceolate. Fr. valves c. 2.2-2.5 mm long, pale brown; margins entire or with a tooth or lobe; valves with an elongated tubercle. Fr. sharply angled, tightly invested by thickened perianth.