Poa argunensis Roshev. - Argun bluegrass.
Taxonomic position.Family Poaceae Barnhart., genus Poa L.
Synonyms.Poa attenuata subsp. argunensis (Roshev) Tzvel.
Biology and morphology.Perennial herb, cespitous. Stems erect, rough, 10-45 cm tall, grayish green.
Leaf blade narrow (0.5-1.5 mm), short, folded, bluish green, rough. Ligule (1)2-3 mm long. Panicle-like inflorescence compact, dense, short, with rough branches. Spikelets 3.0-4.5 cm long. Lemma is pubescent along the ribs. Blossoms in May-June; seeds ripen in August. Facultative cross-pollinated by wind. 2n = ?.
Distribution.Occurs in Southern Siberia.
Ecology.Xeromesophyte. Occurs in the steppe, in dry meadows, on stony slopes, among bushes and in sands in the lower mountain zone. Resistant to drought; cold-resistant and frost-resistant. Resistant to early fall and late spring frosts.
Utilization and economic value.Forage grass of natural steppe pastures. Re-grows at the end of April and is good for grazing in the first part of May or for early harvest. Good re-growth after 3-4 grazings. Can be used as a lawn grass.
Literature cited:Harkevich S.S., ed. 1985. Vascular Plants of the Soviet Far East. Vol. 1. St. Petersburg: Nauka, 390 p. (in Russian).
Malyshev L.I., Peshkova G.A., eds. 1990. Flora of Siberia. Vol. 2. Novosibirsk: Nauka, 361 pp. (in Russian).
Rozhevitz P.U., Shishkin V.K., eds. 1937. Flora of the USSR. Vol. 2. M.-L.: USSR, 778 pp. (in Russian).
Tzvelev N.N. 1976. Poaceae USSR. L.: Nauka, 788 pp. (in Russian).