阿拉套早熟禾Poa alberti Regel.
阿拉套早熟禾Poa alberti Regel.
121．阿拉套早熟禾（拟）图版19：1
Poa alberti Regel. in Acta Horti Petrop. 7: 611. 1881; Roshev. in Kom. Fl. URSS 2; 412, pl. 31. fig. 3. 1934; Tzvel. in Pl. Asiae. Centr. 4: 139. 1968; Tzvel. in Fed. Poac. URSS 474. 1976. as syn.
多年生，具斜升的根状茎。秆高6-20厘米，粗糙，基部为多数老鞘所包围，顶节位于茎下部1/3。顶生叶鞘长约8厘米；叶舌长1-2毫米；叶片窄线形，常对折，宽约1.5毫米，微粗糙，顶生叶片长约2厘米，宽约1毫米。圆锥花序长圆形，狭窄，密聚，长2-4厘米；分枝短，长约1厘米，粗糙；小穗披针形，含2-3小花，长3-4毫米，带紫色或有彩斑；颖顶端尖，第一颖长1.5-2毫米，第二颖长2-2.5毫米；外稃窄披针形，顶端尖，长约2.5毫米，质地较厚，边缘白膜质，脊与边脉下部有柔毛，基盘无绵毛。花果期7-8月。
产新疆（阿拉套山）。生于高山草原。分布于俄罗斯、中亚。模式标本采自阿拉套山。
《Flora of China》 Vol. 22 (2006)
Poa albertii Regel
阿拉套早熟禾 a la tao zao shu he
Culms dense to loosely tufted, 7–15(–25) cm tall, scabrid (sometimes only slightly), nodes 1 or 2, usually near base. Shoots extravaginal, rarely some intravaginal, sometimes with ascending tillers. Leaf sheath scabrid; blade flat, folded or inrolled, (0.5–)1.5–2(–3) mm wide, scabrid; ligule 1–2.5(–3.5) mm. Panicle oblong, narrow, dense to quite loose, (2–)4–6 × 0.5–1.5 cm; branches 2–5 per node, primary basal branch 2/7–2/3 as long as panicle. Spikelets lanceolate, sometimes tinged with purple or variegated, 3–4(–6) mm, florets 2 or 3; sometimes upper floret viviparous; rachilla smooth, warty or papillose; lower glume 1.5–2 mm, upper glume 2–2.5 mm; lemma narrowly lanceolate, glabrous to uniformly pubescent, apex acuminate; callus webbed or glabrous; palea glabrous or smooth between keels. Anthers 1.2–1.5 mm. Fl. and fr. Jul–Aug. 2n = 28, 42.
Alpine grasslands; 2000–5600 m. Gansu, Nei Mongol, Qinghai, Shaanxi, Sichuan, Xinjiang, Xizang, Yunnan [Afghanistan, Bhutan, India, Kazakhstan, Kyrgyzstan, Mongolia, Nepal, Pakistan, Russia, Tajikistan, Uzbekistan; SW Asia (Iran)].
Poa albertii represents an apomictic hybrid complex combining the characters of the parent species P. attenuata s.l. and P. glauca s.l., and perhaps additionally P. versicolor subsp. relaxa.
科名：禾本科 Gramineae
属名：早熟禾属 Poa
121．阿拉套早熟禾（拟）图版19：1
Poa alberti Regel. in Acta Horti Petrop. 7: 611. 1881; Roshev. in Kom. Fl. URSS 2; 412, pl. 31. fig. 3. 1934; Tzvel. in Pl. Asiae. Centr. 4: 139. 1968; Tzvel. in Fed. Poac. URSS 474. 1976. as syn.
多年生，具斜升的根状茎。秆高6-20厘米，粗糙，基部为多数老鞘所包围，顶节位于茎下部1/3。顶生叶鞘长约8厘米；叶舌长1-2毫米；叶片窄线形，常对折，宽约1.5毫米，微粗糙，顶生叶片长约2厘米，宽约1毫米。圆锥花序长圆形，狭窄，密聚，长2-4厘米；分枝短，长约1厘米，粗糙；小穗披针形，含2-3小花，长3-4毫米，带紫色或有彩斑；颖顶端尖，第一颖长1.5-2毫米，第二颖长2-2.5毫米；外稃窄披针形，顶端尖，长约2.5毫米，质地较厚，边缘白膜质，脊与边脉下部有柔毛，基盘无绵毛。花果期7-8月。
产新疆（阿拉套山）。生于高山草原。分布于俄罗斯、中亚。模式标本采自阿拉套山。
《Flora of China》 Vol. 22 (2006)
Poa albertii Regel
阿拉套早熟禾 a la tao zao shu he
Culms dense to loosely tufted, 7–15(–25) cm tall, scabrid (sometimes only slightly), nodes 1 or 2, usually near base. Shoots extravaginal, rarely some intravaginal, sometimes with ascending tillers. Leaf sheath scabrid; blade flat, folded or inrolled, (0.5–)1.5–2(–3) mm wide, scabrid; ligule 1–2.5(–3.5) mm. Panicle oblong, narrow, dense to quite loose, (2–)4–6 × 0.5–1.5 cm; branches 2–5 per node, primary basal branch 2/7–2/3 as long as panicle. Spikelets lanceolate, sometimes tinged with purple or variegated, 3–4(–6) mm, florets 2 or 3; sometimes upper floret viviparous; rachilla smooth, warty or papillose; lower glume 1.5–2 mm, upper glume 2–2.5 mm; lemma narrowly lanceolate, glabrous to uniformly pubescent, apex acuminate; callus webbed or glabrous; palea glabrous or smooth between keels. Anthers 1.2–1.5 mm. Fl. and fr. Jul–Aug. 2n = 28, 42.
Alpine grasslands; 2000–5600 m. Gansu, Nei Mongol, Qinghai, Shaanxi, Sichuan, Xinjiang, Xizang, Yunnan [Afghanistan, Bhutan, India, Kazakhstan, Kyrgyzstan, Mongolia, Nepal, Pakistan, Russia, Tajikistan, Uzbekistan; SW Asia (Iran)].
Poa albertii represents an apomictic hybrid complex combining the characters of the parent species P. attenuata s.l. and P. glauca s.l., and perhaps additionally P. versicolor subsp. relaxa.
