橫香茅
橫香茅 |
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]
目錄
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。