虮子草Leptochloa panicea (Retz.) Ohwi

别名：mucronate sprangletop;细千金子;矶子草;蜡子草;千金子;细千斤子;

科名：禾本科 Gramineae

属名：千金子属 Leptochloa

《中国植物志》第10(1)卷057页
  2．虮子草（种子植物名称）图版16：13，124：2
  Leptochloa panicea (Retz.) Ohwi in Bot. Mag. Tokyo 55:311. 1941;中国主要植物图说 禾本科456. 图387. 1959;华东禾本科植物志123. 1962; 台湾的禾草108. 1975;中国高等植物图鉴5: 137. 1976; 秦岭植物志119. 图91. 1976; 江苏植物志 (上册): 192. 图320. 1977; 海南植物志4: 382, 1977.——Poa panicea Retz. Obs. Bot. 3:11. 1783. ——Fessuca filiformis Lam. Tabl. Encycl. 1: 191. 1791. ——Poa virgata auct. non Poir. : Roth, Nov. Pl. Sp. 66. 1821.
  一年生。秆较细弱，高30-60厘米。叶鞘疏生有疣基的柔毛；叶舌膜质，多撕裂，或顶端作不规则齿裂，长约2毫米；叶片质薄，扁平，长6-18厘米，宽3-6毫米，无毛或疏生疣毛。圆锥花序长10-30厘米，分枝细弱，微粗糙；小穗灰绿色或带紫色，长1-2毫米，含2-4小花；颖膜质，具1脉，脊上粗糙，第一颖较狭窄，顶端渐尖，长约1毫米，第二颖较宽，长约1.4毫米；外稃具3脉，脉上被细短毛，第一外稃长约1毫米，顶端钝；内稃稍短于外稃，脊上具纤毛；花药长约0.2毫米。颖果圆球形，长约0.5毫米。花果期7-10月。
  产陕西、河南、江苏、安徽、浙江、台湾、福建、江西、湖北、湖南、四川、云南、广西、广东等省区；多生于田野路边和园圃内。分布于全球的热带和亚热带地区。模式标本采自印度。
  本种草质柔软，为优良牧草。

《Flora of China》 Vol. 22 (2006)
Leptochloa panicea  (Retzius) Ohwi
虮子草   ji zi cao
Poa panicea Retzius, Observ. Bot. 3: 11. 1783; Cynosurus tenerrimus Hornemann; Eleusine tenerrima (Hornemann) Hornemann; Leptochloa tenerrima (Hornemann) Roemer & Schultes.
Annual. Culms tufted, slender, ascending, 30–80 cm tall. Leaf sheaths papillate-pilose with spreading hairs; leaf blades thin, flat, 4–18 × 0.3–0.6 cm, glabrous or pilose, attenuate; ligule membranous, 1–2 mm, usually lacerate. Inflorescence 10–30(–50) cm, brushlike; racemes 5–35, unilateral, 2–11 cm, very slender, straight, ascending, rachis scabrid, spikelets imbricate. Spikelets glaucous-green or purplish green, elliptic, lightly laterally compressed, 1.4–2 mm, florets 2–4; glumes scabrid along keel; lower glume lanceolate, 0.7–1.5 mm, apex acuminate; upper glume narrowly oblong, 0.9–1.6 mm, cuspidate or obtuse and mucronate; lemmas elliptic-oblong, keeled, lowest 0.8–1.3 mm, veins puberulous, usually also a few appressed hairs between veins, obtuse; palea keels scaberulous. Anthers ca. 0.2 mm. Caryopsis broadly elliptic, 0.7–0.8 mm, obtusely trigonous, apex obtuse. Fl. and fr. Jul–Oct.
Roadsides, rice fields, damp weedy places. Anhui, Fujian, Guangdong, Guizhou, Hainan, Henan, Hubei, Jiangsu, Jiangxi, Shaanxi, Sichuan, Taiwan, Yunnan, Zhejiang [India, Indonesia, Japan, Malaysia, Philippines, Sri Lanka, Thailand, Vietnam; Africa, America].
All Old World material of this species belongs to the typical race, subsp. panicea. Two further subspecies occur in America.

This species is an excellent forage grass.