細小香茅檢視原始碼討論檢視歷史
細小香茅 |
中文學名:細小香茅 拉丁學名:Cymbopogon minor B. S. Sun & R. Zhang ex S. M. Phillips & H. Peng 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 |
細小香茅(xì xiǎo xiāng máo),拉丁文名:Cymbopogon minor B. S. Sun & R. Zhang ex S. M. Phillips & H. Peng,禾本科、香茅屬 多年生草本。多年生草本。叢生,象金屬絲的稈,60-70厘米高。 葉鞘無毛; 葉片狹線形,蒼綠色,約 20 * 0.1-0.2 厘米,平滑,無毛,基部漸狹; 葉舌1.3-2毫米Spathate 圓錐花序適中濃,30厘米的可達; 線形,帶紅色的spatheoles,1.2-1.5厘米; 綠色的總狀花序,成熟時外折,同性花對退化至1短狹窄; 軸節間和花梗slenderly 線, 無梗小穗狹長圓形,產於海拔約900米,分布於雲南東北。 [1]
形態特徵
多年生草本。叢生,象金屬絲的稈,60-70厘米高。 葉鞘無毛; 葉片狹線形,蒼綠色,約 20 * 0.1-0.2 厘米,平滑,無毛,基部漸狹; 葉舌1.3-2毫米Spathate 圓錐花序適中濃,30厘米的可達;
線形,帶紅色的spatheoles,1.2-1.5厘米; 綠色的總狀花序,成熟時外折,同性花對退化至1短狹窄; 軸節間和花梗slenderly 線, 無梗小穗狹長圓形,3.8-4毫米;
更低的穎片草質, 淺凹的中間以下, 用中陷的基地的一根短束胼胝體頭髮, 上面外稃2裂; 芒1.2-1.3 厘米Pedicelledspikelet 狹窄,0.5-2.5毫米,退化至這空更下部的穎片。 果期 10月。
FOC >> Vol.22 (2006) >> Poaceae >> Cymbopogon | eFloras.org Link
6.Cymbopogon minor B. S. Sun & R. Zhang ex S. M. Phillips & H. Peng細小香茅 xi xiao xiang mao
細小香茅 Cymbopogon minor Perennial. Culms tufted, wiry, 60–70 cm tall. Leaf sheaths glabrous; leaf blades narrowly linear, pale green, ca. 20 × 0.1–0.2 cm, smooth, glabrous, narrowed toward base; ligule 1.3–2 mm.
Spathate panicle moderately dense, up to 30 cm; spatheoles linear, reddish, 1.2–1.5 cm; racemes green, deflexed at maturity, homogamous pair reduced to 1 short narrow spikelet; rachis internodes and pedicels slenderly linear, margins ciliate with ca. 0.7 mm hairs increasing to 2–3 mm at apex, internode apex expanded, cupular, scarious, toothed.
Sessile spikelet narrowly oblong, 3.8–4 mm; lower glume herbaceous, shallowly concave below middle, a short tuft of callus hairs in base of concavity, lightly keeled below middle, sharply keeled above, keels scabrid, wingless, 2–4-veined between keels above middle;
upper lemma 2-lobed; awn 1.2–1.3 cm. Pedicelledspikelet narrow, 0.5–2.5 mm, reduced to the empty lower glume. Fr. Oct.
產地生境
- Roadsides in grasslands; ca. 900 m. NE Yunnan.
在牧場的路旁; 海拔約900米,雲南東北。
辨析
This species is known only from the type. It shares with Cym-bopogon liangshanensis the unusual character, not otherwise seen in Chinese species, of reduced homogamous and pedicelled spikelets.
模式標本種只見到模式標本模式標本。它與Cym同享bopogon的liangshanensis 不平常的特徵,並非退化的同性花和pedicelled小穗的在中國種里看見的否則。