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 横香茅

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中文学名:横香茅

拉丁学名:Cymbopogon traninhensis

(A. Camus) Soenarko

界:植物界

门:被子植物门

纲:单子叶植物纲

目:禾本目

科:禾本科

属:香茅属

横香茅(héng xiāng máo),拉丁文名:Cymbopogon traninhensis (A. Camus) Soenarko,异名:Cymbopogon confertiflorus var. traninhensis Cymbopogon khasianus var. nagensis ,禾本科香茅属 多年生,多年生草本。丛生的秆,高的1.5-2厘米,直径约5毫米, 节无毛或被短柔毛。 高于节的叶鞘无毛或被短柔毛在基部; 叶片线形,可达 75 * 1-1.3 厘米,在鞘连接点,或无毛,粗糙的边缘,基部逐渐狭窄,好渐尖的先端背面具髯毛; 叶舌3-6毫米Spathate 化合物圆锥花序狭窄,直立或者稍开展,通常略带紫色,产于云南[1]

目录

形态特征

多年生草本。丛生的秆,高的1.5-2厘米,直径约5毫米, 节无毛或被短柔毛。 高于节的叶鞘无毛或被短柔毛在基部; 叶片线形,可达 75 * 1-1.3 厘米;

在鞘连接点,或无毛,粗糙的边缘,基部逐渐狭窄,好渐尖的先端背面具髯毛; 叶舌3-6毫米Spathate 化合物圆锥花序狭窄,直立或者稍开展,通常略带紫色,大约50厘米或更多, spatheoles 1-2厘米;

总状花序2-2.5厘米; 在边上的轴节间和花梗纤毛虫; 不膨胀的同性花的对的花梗。 无梗小穗狭倒卵形, 5.5-7 * 1-1.5 毫米;

浅的更低的颖片平的或凹的中间以下, 上面外稃具芒; 芒1-2 厘米Pedicelled小穗5-5.5毫米

FOC >> Vol.22 (2006) >> Poaceae >> Cymbopogon | eFloras.org Link 20.Cymbopogon traninhensis (A. Camus) Soenarko横香茅 heng xiang mao

Cymbopogon confertiflorus (Steudel) Stapf var. traninhensis A. Camus, Bull. Mus. Natl. Hist. Nat. 26: 565. 1920; C. khasianus (Munro ex Hackel) Stapf ex Bor var. nagensis Bor.

Perennial. Culms tufted, 1.5–2 cm tall, ca. 5 mm in diam., nodes glabrous or pubescent. Leaf sheaths glabrous or pubescent at base above node; leaf blades linear, up to 75 × 1–1.3 cm, abaxial surface bearded at sheath junction, otherwise glabrous, margins scabrid, base gradually narrowed, apex finely acuminate; ligule 3–6 mm.

Spathate compound panicle narrow, erect or slightly spreading, usually purplish, ca. 50 cm or more, branched several times, spathes in lax clusters; spatheoles 1–2 cm; racemes 2–2.5 cm; rachis internodes and pedicels ciliate on margins;pedicel of homogamous pair not swollen.

Sessile spikelet narrowly obovate, 5.5–7 × 1–1.5 mm; lower glume flat or shallowly concave below middle, frequently pubescent in depression, often transversely wrinkled, sharply 2-keeled throughout, keels winged above middle, wings 0.3–0.5 mm wide, 2–5-veined between keels; upper lemma awned; awn 1–2 cm. Pedicelled spikelet 5–5.5 mm.

产地生境

Dry rocky or grassy hill slopes. Yunnan [NE India, Laos, Myanmar, N Thailand].

干燥岩石的或长满草的小山斜坡。 云南 [老挝,缅甸,印度东北部,泰国北部 ].

辨析

This species is very close to Cymbopogon khasianus, with the erect, purplish compound panicle typical of that species, but has slightly longer, more broadly winged spikelets.

本种非常接近于Cymbopogon khasianus。

参考资料

  1. 横香茅植物智 [引用日期2019-12-19]