栏目

吉曼草Germainia capitata Bal. et Poitr.

吉曼草Germainia capitata Bal. et Poitr.

别名:筒穗草;

科名:禾本科 Gramineae

属名:吉曼草属 Germainia

《中国植物志》第10(2)卷113页
  1. 吉曼草(广东植物名录油印本)图版27
  Germainia capitata Bal. et Poitr. in Bull. Soc. Hist. Nat. Toulouse. 7: 345. 1873; 中国主要植物图说·禾本科788-789, 图736. 1959.
  多年生直立草本植物。秆高50-60厘米。叶鞘无毛或疏生柔毛;叶舌干膜质,长约1毫米;叶片线形,长5-16厘米,宽3-5毫米,两面均疏生柔毛,在基部的毛较密。总状花序圆筒形,长约15毫米(芒除外),宽3-5毫米,淡绿色;无柄雄小穗与花序等长,在其腹面基部常残留有雌小穗的柄或极退化的雌小穗,通常4个轮生于花序的外围;第一颖硬革质,平滑,具7-9脉,背圆,顶端常下凹;第二颖膜质,具3脉,红褐色,两小花各含2雄蕊,花药长6-8毫米,其内、外稃皆薄膜质,红褐色。有柄雌小穗3枚,具长约5毫米的柄,柄具细毛;小穗长约1厘米(包括基盘),黑褐色,基盘尖锐而具黑褐色的硬毛;第一颖革质,背圆形,具细毛;第二颖质地较软,长约7毫米;第一外稃膜质,略呈长方形,长约5毫米;第一内稃不存在;第二外稃膜质,仅为芒的基部;芒两回膝曲,第一芒柱长2.5-3厘米,第二芒柱长约1厘米,均具白色短硬毛,芒针长约2.5厘米而无毛。花果期秋季。
  产于广东(广州)。印度也有分布。

《Flora of China》 Vol. 22 (2006)
Germainia capitata  Balansa & Poitrasson
吉曼草   ji man cao
Perennial; basal sheaths persistent, glabrous to tomentose. Culms tufted, erect, 50–60 cm tall, unbranched. Leaf sheaths glabrous or pilose; leaf blades erect, stiff, 5–35 × 0.3–0.9 cm, pubescent to glabrous, margins scabrid, acuminate; ligule scarious, ca. 1 mm. Raceme 1(–2) on a long stiff peduncle, 2–3 cm, greenish, narrowly capitulate. Sessile spikelets 4, involucrelike, 1.3–2.2 cm, 2 florets present; lower glume oblong, leathery, smooth, glabrous or sparsely pilose, apex retuse to obliquely 2-toothed; upper glume puberulous, apex rounded to truncate; lemmas and paleas reddish brown, subhyaline; stamens 2 in each floret; anthers 6–8 mm. Pedicelled spikelets 3, dark brown; pedicel 5–7 mm; callus stiffly bearded, hairs brown; lower glume narrowly lanceolate-oblong, leathery, puberulous; awn 2-geniculate, stout, 6–9.5 cm, column hispidulous, limb shorter than column, puberulous. Fl. and fr. autumn.
Dry hillsides; 800–1000 m. Guangdong, Yunnan (Lingchuan) [Indonesia, New Guinea, Thailand, Vietnam; Australia].
The elongate involucres of hard sessile spikelets, tipping the culms after the long-awned pedicellate spikelets have fallen, are an unmistakable feature of this grass.

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