Russia Flora: Plant 7—35 cm tall. Stems thin, more or less erect, rarely ascending, branching near base, short-hairy at nodes. Sheaths patent-hairy, rarely almost glabrous; leaf blades 1.5—3 (5) mm wide and (2) 4—8(10) cm long, linear, flat, gradually acuminate, glabrous and smooth, only long-ciliate along margins; ligule of upper leaves 0.8—1.3 mm long, very shortly ciliate. Inflorescence of (1) 2 (3) spike-like branches 2—8 cm long. Spikelets 3.5—4.5 mm long, more or less purplish, narrowly lanceolate, appressed to branch axis and strongly laterally compressed, with a crown of short dense hairs around base, with one flower. Glumes leathery-membranous, keeled but without veins, long-hairy on sides and near margin. Lower lemma of fertile flower thinly membranous, obtusely bidentate, keeled, equaling 2/3 length of glumes, with weakly geniculate long thin twisted awn between teeth, exceeding spikelet by 7—10 mm. Stamens 2, with anthers 0.3—0.7 mm long. 2n = 14 (Probatova, Sokolovskaya, 1984). (Plate XXVI).

Ussuri (south: Russky and Putyatina islands in Peter the Great Bay). (Fig. 162). — On wet and marshy meadows, on floating mats along water bodies; mass species. VIII—IX. Protected. — Endemic. — Described from Primorye: "Russky Island near Vladivostok, on margins of marshy meadow, 27 VIII 1922, № 53, N. Desulavy" (type — LE, isotype — VLA).

Note. This plant was known for almost 60 years only from type specimens; rediscovered in 1981 on Putyatina Island (Lake Brazenievoe) by L. M. Borzova, T. V. Klychkova and B. I. Semkin.