光滑早熟禾Poa glabriflora Roshev. ex Ovcz.

科名：禾本科 Gramineae

属名：早熟禾属 Poa

《中国植物志》第9(2)卷226页
  230．光滑早熟禾（拟）图版14：11
  Poa glabriflora Roshev. ex Ovcz. in Izv. Tadzhik. Bazy. Bot. 1: 10, 14. 1933; Fl. Kazakh 1: 225. 1956; Bor., Grass. Burma Ceyl. Ind. Pakist. 557. 1960. et Rech. f. Fl. Iran. 70: 27. 1970. ——Poa bactriana Roshev. subsp. glabriflora(Roshev. ex Ovcz. )Tzvel. in Nov. Sist. Vyssh. Rast. 11: 96. 1973. et in Fed. Poac. URSS 450. 1976; T. A. Cope in Nasir Fl. Pakist. 143: 403. 1982.
  多年生，秆基具增大小鳞茎。茎细，直立，高10-20厘米。叶鞘平滑无毛；叶片狭线形，渐尖，粗糙，长约2厘米，宽1-2毫米，基生叶细长内卷。圆锥花序长圆状椭圆形，长2-5厘米，宽1-2厘米，分枝短而密生小穗；小穗长约4毫米，黄色带有紫色；第一颖长约1.5毫米，第二颖长约2毫米；外稃长约2.5毫米，除脊微具纤毛外，全部无毛，基盘不具绵毛；内稃两脊粗糙；花药长1-1.2毫米。花果期5-7月。
  产新疆、西藏。生于干旱山坡草地，海拔2400-4000米。分布于俄罗斯、中亚、伊朗、巴基斯坦、克什米尔。模式标本采自乌兹别克斯坦。

《Flora of China》 Vol. 22 (2006)
Poa bactriana subsp. glabriflora  (Roshevitz) Tzvelev
光滑早熟禾   guang hua zao shu he
Poa bulbosa Linnaeus var. glabriflora Roshevitz, Fl. Turkmen. 1: 143. 1932; P. bactriana subsp. zaprjagajevii (Ovczinnikov) Tzvelev; P. glabriflora (Roshevitz) Roshevitz ex Ovczinnikov; P. scitula Bor; P. zaprjagajevii Ovczinnikov.
Culms (2–)8–40 cm. Leaf blade ca. 2 cm × 0.5–2 mm, surfaces scabrid, in tillers flat or folded with margins inrolled or not, elongated, narrower. Panicle oblong to lanceolate, fairly diffuse, 2.5–10 × 1–2 cm. Spikelets tawny, purple tinged, ca. 4 mm; vivipary commonly present, or absent (in Chinese material); glumes, lower glume ca. 1.5 mm, upper glume ca. 2 mm; lemmas 2–2.7 mm, keel and veins only slightly scabrid, otherwise glabrous.Anthers 0.6–1.2(–1.5) mm. Fl. and fr. May–Jul.
Middle and upper mountain zones, dry grassy places on slopes, stony and silty slopes; 2400–4000 m. ?Xinjiang, Xizang [Afghanistan, Kashmir, Kazakhstan, Kyrgyzstan, Pakistan, Tajikistan, Turkmenistan, Uzbekistan; SW Asia (Iran)].
The distinction between subsp. zaprjagajevii and subsp. glabri-flora is between plants from alpine habitats with distinctly purple, open panicles, sparsely scabrid branches with only a few spikelets (subsp. zaprjagajevii), and plants from middle mountains with pale green or pinkish violet tinged, loosely contracted panicles with several (often viviparous) spikelets (subsp. glabriflora). From the limited material seen we doubt the value of keeping them apart. Poa scitula Bor is an excellent match for subsp. zaprjagajevii.

Poa (sect. Arenariae) vvedenskyi Drobow was reported in FRPS (9(2): 224. 2002) from alpine grassy places at ca. 3000 m in Xinjiang, but no voucher has been seen by us and it is probably not present in China. Tzvelev (Zlaki SSSR, 451. 1976) wrote that P. vvedenskyi is endemic to the Uzbekistan Chulbair Range of the Gissar Mountains and adjacent Afghanistan as reported by Bor (in Rechinger, Fl. Iran. 70: 28. 1970). The report in FRPS from Xinjiang more likely represents P. bactriana subsp. glabriflora or (if separated) subsp. zaprjagajevii. Poa vveden-skyi can be distinguished from normal-flowered plants of P. bactriana by the pubescent lemmas, and from normal-flowered plants of P. bulbosa by having panicles sparse, with almost smooth branches, bearing 1–3 spikelets each; lemmas lanceolate, 3–5 mm, pinkish violet, apex gradually tapering, slightly pilose along veins proximally; spikelets always normal-flowered; alpine plants, 10–15 cm tall.