Japan Flora: Glabrous low perennial with slender rhizomes and short creeping stolons; culms few together, slender, 15-30 cm. long, smooth, glabrous; leaf-blades linear, of the radical somewhat elongate, of the culm-leaves 5-10 cm. long, 3-4 mm. wide, nearly smooth, loosely involute, glaucous above; ligules truncate, less than 1 mm. long; panicles nodding, 4-7 cm. long, ovate, loose, the branches geminate, smooth; spikelets 7-8 mm. long, dull, pale green with a brown and purple hue, 3- or 4-flowered; glumes nearly equal, 3-nerved, lanceolate, acute, scaberulous, keeled, 3-4 mm. long; lemmas longer than the glumes, slightly keeled, narrowly ovate, 6-7 mm. long, rather herbaceous, gla­brous, acute to very acute, 3(-5)-nerved; palea as long as the lemma; callus and rachilla glabrous; anthers (2.5-) 3-3.5 mm. long, linear; ovary puberulent at apex.- July-Aug. Alpine regions.

Honshu (centr. distr.); very rare.