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 橫香茅

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中文學名:橫香茅

拉丁學名:Cymbopogon traninhensis

(A. Camus) Soenarko

界:植物界

門:被子植物門

綱:單子葉植物綱

目:禾本目

科:禾本科

屬:香茅屬

橫香茅(héng xiāng máo),拉丁文名:Cymbopogon traninhensis (A. Camus) Soenarko,異名:Cymbopogon confertiflorus var. traninhensis Cymbopogon khasianus var. nagensis ,禾本科香茅屬 多年生,多年生草本。叢生的稈,高的1.5-2厘米,直徑約5毫米, 節無毛或被短柔毛。 高於節的葉鞘無毛或被短柔毛在基部; 葉片線形,可達 75 * 1-1.3 厘米,在鞘連接點,或無毛,粗糙的邊緣,基部逐漸狹窄,好漸尖的先端背面具髯毛; 葉舌3-6毫米Spathate 化合物圓錐花序狹窄,直立或者稍開展,通常略帶紫色,產於雲南[1]

形態特徵

多年生草本。叢生的稈,高的1.5-2厘米,直徑約5毫米, 節無毛或被短柔毛。 高於節的葉鞘無毛或被短柔毛在基部; 葉片線形,可達 75 * 1-1.3 厘米;

在鞘連接點,或無毛,粗糙的邊緣,基部逐漸狹窄,好漸尖的先端背面具髯毛; 葉舌3-6毫米Spathate 化合物圓錐花序狹窄,直立或者稍開展,通常略帶紫色,大約50厘米或更多, spatheoles 1-2厘米;

總狀花序2-2.5厘米; 在邊上的軸節間和花梗纖毛蟲; 不膨脹的同性花的對的花梗。 無梗小穗狹倒卵形, 5.5-7 * 1-1.5 毫米;

淺的更低的穎片平的或凹的中間以下, 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橫香茅 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.

產地生境

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

乾燥岩石的或長滿草的小山斜坡。 雲南 [老撾,緬甸,印度東北部,泰國北部 ].

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.

本種非常接近於Cymbopogon khasianus。

參考資料

  1. 橫香茅植物智 [引用日期2019-12-19]