Poa bactriana Roshev.

This species is uncommon or rare in the mountains of far W and NW China.

Perennials, densely tufted; shoots with bulbous bases. Culms (2–)8–60 cm tall, erect, base with swollen, withered leaf sheaths. Leaf sheath smooth, glabrous, uppermost culm sheath closed for 1/4 length; blade flat or folded, thin, 2–15 cm, 1–3 mm wide, surfaces and margins scabrid, apex slender prow-tipped; ligules 1.5–3 mm, apex obtuse, rounded, of tillers 0.7–1.5 mm. Panicle loosely contracted to open, oblong to pyramidal, well exserted, 2–10 cm; branches obliquely ascending or spreading, 2–3(–4) per node, smooth, longest with sparse to moderately crowded spikelets. Spikelets green or apices purple, ovate to elliptic, (3–)4–7 mm, florets 2–4(–6); vivipary present or absent; glumes unequal, lower glume 2–3 mm, 1-veined, upper glume wider, 3–3.5 mm, 3-veined; lemmas elliptic to lanceolate, 2–3.5(–4) mm, veins glabrous throughout, keel and marginal veins scabrid; callus glabrous; palea keels scabrid. Anthers (0.6–)1.2–2 mm. Fl. and fr. Apr–May.

Tufted perennial; culms 10-70 cm high, usually erect, clothed at the base with the hardened remains of old leaf-sheaths forming a bulbous swelling. Leaf-blades flat or folded, mostly basal, 1.5-17cm long, 1-3.5mm wide, long-acuminate, scabrid on the margins and often on both surfaces; ligule blunt, 1.5-3mm long. Panicle oblong or pyramidal, 1.5-10cm long, usually fairly dense, sometimes loose or interrupted; branches (1)2-3(-4) at the lower nodes, ascending, smooth below. Spikelets 2-4(-6)-flowered, ovate-elliptic, (3-)3.5-7mm long, green or tinged with purple; glumes subequal, 2-3(-3.5)mm long, the lower 1-nerved, the upper broader, 3-nerved; lemmas elliptic-lanceolate in side-view, 2-3.5(-4)mm long, blunt or subacute, completely hairless on the surface and on the nerves and without any wool at the base, sometimes scaberulous along the keel and marginal nerves; palea slightly shorter than the lemma, scabrid on the keels; anthers 0.6-2mm long.

Xinjiang, Xizang [Afghanistan, Kashmir, Kazakhstan, Kyrgyzstan, Pakistan, Tajikistan, Turkmenistan, Uzbekistan; SW Asia (Iran)].

Juniperus forests, among shrubs, mountainous areas, dry grassy places on slopes, stony and silty slopes, desert grasslands; 400–4000 m.

Poa bactriana là một loài thực vật có hoa trong họ Hòa thảo. Loài này được Roshev. miêu tả khoa học đầu tiên năm 1923.

荒漠早熟禾（学名：Poa bactriana）为禾本科早熟禾属下的一个种。