疏穗画眉草Eragrostis perlaxa Keng
疏穗画眉草Eragrostis perlaxa Keng
13. 疏穗画眉草（禾本科图说）图版5：3-7，122:3
Eragrostis perlaxa Keng 中国主要植物图说 禾本科306. 图249, 1959. nom. nud. ex Keng f. et L. Liou in Acta Bot. Sin. 9:66. 1960.
多年生。秆丛生，直立而纤细，高40-90厘米，径约1毫米，具2-3节。叶鞘紧裹茎，光滑，鞘口有毛；叶舌为一圈纤毛，长约0.2毫米；叶片内卷，直立，上面疏生长柔毛，长3-8厘米，宽1-2.5毫米。圆锥花序开展，长7-25厘米，宽4-9厘米，每节具1分枝，分枝长4-8厘米，腋间无毛，小枝上疏生2-5个小穗，小穗柄长0.5-1厘米；小穗线形或矩形，长0.5-2.5厘米，宽约3毫米，含6-60小花，草黄色带灰绿色；颖具1脉，第一颖狭卵形，先端渐尖，长约1.2毫米；第二颖卵形，先端尖，长约1.5毫米；外稃广卵形，先端急尖，侧脉明显，第一外稃长约2毫米；内稃稍短于外稃，长约1.8毫米，脊上有纤毛，宿存；花药长约0.3毫米。颖果长约0.6毫米。果期8月。
产广东、广西及台湾。模式标本采自香港。
《Flora of China》 Vol. 22 (2006)
Eragrostis perlaxa Keng ex P. C. Keng & L. Liu
疏穗画眉草 shu sui hua mei cao
Perennial. Culms tufted, erect and slender, 40–90 cm tall, ca. 1 mm in diam., 2–3-noded. Leaf sheaths glabrous, pilose along the summit; ligules a line of hairs, ca. 0.2 mm; leaf blades involute, adaxial surface pilose, 3–8 × 0.1–0.25 cm. Panicle lax, 7–25 × 0.4–0.9 cm; branch solitary, 4–8 cm, glabrous in axils; branchlet with 2–5 spikelets. Spikelets stramineous or gray-green, filiform or oblong, 0.5–2.5 × ca. 0.3 cm, 6–60-flowered, with pedicel 0.5–1 cm. Glumes 1-veined, lower glume narrowly ovate, apex acuminate, ca. 1.2 mm, upper glume ovate, apex acute, ca. 1.5 mm. Lemmas broadly ovate, apex acute, lateral veins distinct, lower lemma ca. 2 mm. Palea ca. 1.8 mm, persistent, along keels ciliate. Anthers ca. 0.3 mm. Caryopsis ca. 0.6 mm. Fl. Aug.
* Mountain slopes, open ground. Anhui, Fujian, Guangdong, Guangxi, Taiwan.
别名：疏花画眉草;
科名：禾本科 Gramineae
属名：画眉草属 Eragrostis
13. 疏穗画眉草（禾本科图说）图版5：3-7，122:3
Eragrostis perlaxa Keng 中国主要植物图说 禾本科306. 图249, 1959. nom. nud. ex Keng f. et L. Liou in Acta Bot. Sin. 9:66. 1960.
多年生。秆丛生，直立而纤细，高40-90厘米，径约1毫米，具2-3节。叶鞘紧裹茎，光滑，鞘口有毛；叶舌为一圈纤毛，长约0.2毫米；叶片内卷，直立，上面疏生长柔毛，长3-8厘米，宽1-2.5毫米。圆锥花序开展，长7-25厘米，宽4-9厘米，每节具1分枝，分枝长4-8厘米，腋间无毛，小枝上疏生2-5个小穗，小穗柄长0.5-1厘米；小穗线形或矩形，长0.5-2.5厘米，宽约3毫米，含6-60小花，草黄色带灰绿色；颖具1脉，第一颖狭卵形，先端渐尖，长约1.2毫米；第二颖卵形，先端尖，长约1.5毫米；外稃广卵形，先端急尖，侧脉明显，第一外稃长约2毫米；内稃稍短于外稃，长约1.8毫米，脊上有纤毛，宿存；花药长约0.3毫米。颖果长约0.6毫米。果期8月。
产广东、广西及台湾。模式标本采自香港。
《Flora of China》 Vol. 22 (2006)
Eragrostis perlaxa Keng ex P. C. Keng & L. Liu
疏穗画眉草 shu sui hua mei cao
Perennial. Culms tufted, erect and slender, 40–90 cm tall, ca. 1 mm in diam., 2–3-noded. Leaf sheaths glabrous, pilose along the summit; ligules a line of hairs, ca. 0.2 mm; leaf blades involute, adaxial surface pilose, 3–8 × 0.1–0.25 cm. Panicle lax, 7–25 × 0.4–0.9 cm; branch solitary, 4–8 cm, glabrous in axils; branchlet with 2–5 spikelets. Spikelets stramineous or gray-green, filiform or oblong, 0.5–2.5 × ca. 0.3 cm, 6–60-flowered, with pedicel 0.5–1 cm. Glumes 1-veined, lower glume narrowly ovate, apex acuminate, ca. 1.2 mm, upper glume ovate, apex acute, ca. 1.5 mm. Lemmas broadly ovate, apex acute, lateral veins distinct, lower lemma ca. 2 mm. Palea ca. 1.8 mm, persistent, along keels ciliate. Anthers ca. 0.3 mm. Caryopsis ca. 0.6 mm. Fl. Aug.
* Mountain slopes, open ground. Anhui, Fujian, Guangdong, Guangxi, Taiwan.
