瓦小沿溝草
瓦小沿溝草 |
中文學名:瓦小沿溝草 拉丁學名: Colpodium wallichii (Hook.f.) Bor 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:擬沿溝草屬 |
瓦小沿溝草(wǎ xiǎo yán gōu cǎo),學名 Colpodium wallichii (Stapf) Bor,異名:Catabrosa wallichii Paracolpodium wallichii ,禾本科,擬沿溝草屬多年生植物,短。 稈直立,7-25厘米高,有節的2-3。 葉鞘長於節間; 葉片狹線形到絲狀,可達10厘米×毫米,無毛; 葉舌開花2-2.5毫米精美,營業,很少細刺,幾乎葡萄狀,2.5-5.5厘米; 每節1或2分枝;小穗3.7-5.5毫米,小花1,紫色或更不經常帶綠色; 穎片稍短到稍長於小花, 外稃狹披針形長方形,產於 海拔超過4000米,分布於西藏自治區 Xizang。 [1]
目錄
形態特徵
多年生植物,短。 稈直立,7-25厘米高,有節的2-3。 葉鞘長於節間; 葉片狹線形到絲狀,可達10厘米×毫米,無毛; 葉舌開花2-2.5毫米精美,營業;
很少細刺,幾乎葡萄狀,2.5-5.5厘米; 每節1或2分枝;小穗3.7-5.5毫米,小花1,紫色或更不經常帶綠色; 穎片稍短到稍長於小花;
外稃狹披針形長方形,3.2-4.3毫米,昏暗3-5脈, 內稃龍骨被短柔毛; 存在,短的小穗軸擴展。 雄蕊2; 花葯2-2.5毫米。
FOC >> Vol.22 (2006) >> Poaceae >> Colpodium | eFloras.org Link 3.Colpodium wallichii (Stapf) Bor瓦小沿溝草 wa xiao yan gou cao
Catabrosa wallichii Stapf in J. D. Hooker, Fl. Brit. India 7: 312. 1896 ["1897"]; Paracolpodium wallichii (Stapf) E. B. Alexeev.Perennial, shortly rhizomatous. Culms erect, 7–25 cm tall, 2–3-noded.
Leaf sheaths longer than internodes; leaf blades narrowly linear to filiform, up to 10 cm × 1–2 mm, glabrous; ligule 2–2.5 mm. Inflorescence delicate, open, few-spiculate, almost racemose, 2.5–5.5 cm; branches 1 or 2 per node, up to 1 cm, capillary, flexuous, mostly bearing only 1 spikelet, occasionally 2, equaling or longer than spikelet, gently reflexing at maturity.
Spikelets 3.7–5.5 mm, floret 1, purple or less often greenish; glumes slightly shorter to slightly longer than floret, lower glume narrowly lanceolate, 3–5 mm, apex subacute, upper glume lanceolate-oblong,3.5–5.5 mm, apex narrowly obtuse;
lemma narrowly lanceolate-oblong, 3.2–4.3 mm, obscurely 3–5-veined, shortly pubescent along veins below middle, sometimes a few hairs on lower back, apex obtuse to truncate-denticulate; palea keels shortly pubescent; rachilla extension present, short. Stamens 2; anthers 2–2.5 mm.
產地生境
Stony or sandy places in trickling water from snow melt; above 4000 m. ?Xizang [Bhutan, India (Sikkim), Nepal].
在用雪使水滴下過程中的石質或沙地融化; 海拔超過4000米,西藏自治區 Xizang [不丹,印度(錫金),尼泊爾 ].
辨析
This species is very likely to occur in the mountains of S Xizang, but the illustration in Fl. Xizang. (5: 141. 1987, as Catabrosa wallichii) appears to be a form of Catabrosa aquatica.
本種對分布於是很可能的西藏南部的山,但是在花期里的插圖 Xizang。 ( 5: 141. 1987, 當時Catabrosa wallichii)看起來Catabrosa在形式aquatica。
標本鑑定信息
學名 Colpodium wallichii (Hook.f.) Bor 中文名 鑑定人 陳文俐 鑑定時間 20090106
採集信息
採集人 H.B.G. 採集號 746 採集時間 19930804 採集地 中國 青海省 海拔 4780~4900 生境 Alpine meadow.Rizomatous grass. 習性 物候期 有花有果