横香茅
横香茅 |
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。