科名：禾本科 Gramineae

属名：旱禾属 Eremopoa

《中国植物志》第9(2)卷234页
  4．阿尔泰旱禾（拟）
  Eremopoa altaica (Trin.) Roshev. in Kom. Fl. URSS 2: 431, Pl. 32. f. 13. 1934; Tzvel. in Fed. Poac. URSS 480. 1976; Tutin et al. , Fl. Europ. 5: 167. 1980; T. A. Cope in Nasir. Fl. Pakisk. 143: 420. 1982. ——Aira altaica Trin. in Mem. Sav. Etr. Acad. Petersb. 2: 526. 1835. ——Nephelochloa altaica(Trin. )Griseb. in Ledeb. Fl. Ross. 4: 367. 1853. ——Eremopoa bellula(Regel. )Roshev. in Kom. Fl. URSS 2: 431. 1934; Bor in Rech. f. Fl. Iran. 70: 47. 1970.
  一年生细小草本。秆高5-15厘米，单一，直立，无毛。叶舌膜质，长约1毫米；叶片细线形，长2-5厘米，宽约1毫米，对折，无毛，上面粗糙。圆锥花序疏展，长2-6厘米，具少数小穗；分枝粗糙，长1-1.5厘米，2-4枚着生于各节；小穗较大，含3-6小花，长4.5-5 (-6)毫米，绿色或带紫色；颖披针形，顶端尖，第一颖长约1毫米，第二颖长1.2-2毫米；外稃披针形，长约4毫米，微粗糙，脊和边脉下部生微毛，顶端渐尖成长约0.5毫米之短芒；内稃短于其外稃的1/4。花果期6-7月。染色体2n＝42（Tzvel. et Grif. 1965，Sokolovskaya et Probatova 1979），28（Stoeva 1984）。
  产新疆。生于高山砾石地，海拔1800-4000米。俄罗斯西西伯利亚、中亚、帕米尔高原、小亚细亚有分布。模式标本采自阿尔泰。

《Flora of China》 Vol. 22 (2006)
Poa diaphora  Trinius
阿尔泰旱禾   a er tai han he
Annual. Culms 5–45 cm tall, solitary or tufted, slender. Leaf blade 2–10 cm × 1–4 mm, flat or folded, abaxial surface scabrid or smooth, adaxial surface scabrid, apex acuminate; ligule 1–3 mm. Panicle delicate, narrowly to broadly ovate in outline, 2–20 cm; branches 3–10 per node, subcapillary, scabrid. Spikelets elliptic, 4–6.5 mm, florets 2–6, green or purple tinged; lower glume lanceolate, 1–2 mm, apex acute, up to 1/2 as long as lowest lemma; upper glume narrowly ovate, 1.5–2.5 mm, apex acute or subacute; lemmas 2–4 mm, glabrous or scantily hairy to densely appressed-pubescent along lower part of veins, margins narrowly membranous, apex acuminate or often with a mucro to 0.5 mm; palea a little shorter than lemma. Anthers 0.4–1 mm. Fl. and fr. May–Aug. 2n = 28, 42.
Borders of streams and drying ponds, dry stony or sandy places; 1300–4000 m. Xinjiang, Xizang [Afghanistan, NW India, Kashmir, Kazakhstan, Kyrgyzstan, Pakistan, Russia, Tajikistan, Turkmenistan, Uzbekistan; SW Asia].
Poa diaphora is a widespread and variable species and is sometimes divided into infraspecific taxa. The most distinct is subsp. oxy-glu-mis, with hairy lemma veins appearing as silky-white stripes, although intermediates do occur. Small plants (up to 15 cm) with relatively long lemmas (over 3.5 mm) are sometimes distinguished, as subsp. diaphora, from the bulk of the species, which would then be placed in a "subsp. songarica," but this distinction is much less clear-cut and is not followed here.