瓦小沿沟草查看源代码讨论查看历史
瓦小沿沟草 |
中文学名:瓦小沿沟草 拉丁学名: Colpodium wallichii (Hook.f.) Bor 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:拟沿沟草属 |
瓦小沿沟草(wǎ xiǎo yán gōu cǎo),学名 Colpodium wallichii (Stapf) Bor,异名:Catabrosa wallichii Paracolpodium wallichii ,禾本科,拟沿沟草属多年生植物,短。 秆直立,7-25厘米高,有节的2-3。 叶鞘长于节间; 叶片狭线形到丝状,可达10厘米×毫米,无毛; 叶舌开花2-2.5毫米精美,营业,很少细刺,几乎葡萄状,2.5-5.5厘米; 每节1或2分枝;小穗3.7-5.5毫米,小花1,紫色或更不经常带绿色; 颖片稍短到稍长于小花, 外稃狭披针形长方形,产于 海拔超过4000米,分布于西藏自治区 Xizang。 [1]
形态特征
多年生植物,短。 秆直立,7-25厘米高,有节的2-3。 叶鞘长于节间; 叶片狭线形到丝状,可达10厘米×毫米,无毛; 叶舌开花2-2.5毫米精美,营业;
很少细刺,几乎葡萄状,2.5-5.5厘米; 每节1或2分枝;小穗3.7-5.5毫米,小花1,紫色或更不经常带绿色; 颖片稍短到稍长于小花;
外稃狭披针形长方形,3.2-4.3毫米,昏暗3-5脉, 内稃龙骨被短柔毛; 存在,短的小穗轴扩展。 雄蕊2; 花药2-2.5毫米。
FOC >> Vol.22 (2006) >> Poaceae >> Colpodium | eFloras.org Link 3.Colpodium wallichii (Stapf) Bor瓦小沿沟草 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.
产地生境
Stony or sandy places in trickling water from snow melt; above 4000 m. ?Xizang [Bhutan, India (Sikkim), Nepal].
在用雪使水滴下过程中的石质或沙地融化; 海拔超过4000米,西藏自治区 Xizang [不丹,印度(锡金),尼泊尔 ].
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.
本种对分布于是很可能的西藏南部的山,但是在花期里的插图 Xizang。 ( 5: 141. 1987, 当时Catabrosa wallichii)看起来Catabrosa在形式aquatica。
标本鉴定信息
学名 Colpodium wallichii (Hook.f.) Bor 中文名 鉴定人 陈文俐 鉴定时间 20090106
采集信息
采集人 H.B.G. 采集号 746 采集时间 19930804 采集地 中国 青海省 海拔 4780~4900 生境 Alpine meadow.Rizomatous grass. 习性 物候期 有花有果