梭羅以禮草
梭羅以禮草 |
中文名:梭羅以禮草 拉丁學名:Kengyilia thoroldiana (Oliver) J. L. Yang et al. 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 亞 科:早熟禾亞科 屬:以禮草屬 種:梭羅以禮草 |
梭羅以禮草(suō luó yǐ lǐ cǎo),學名:Kengyilia thoroldiana (Oliver) J. L. Yang et al.,俗名:梭羅草,異名:Roegneria thoroldiana Elymus thoroldianus Agropyron thoroldianum ,是禾本科、以禮草屬植物。葉鞘平滑無毛,疏鬆裹莖。 [1]
目錄
梭羅以禮草形態特徵
植株低矮,密叢;稈高12-15厘米,具1-2節,緊接花序以下平滑無毛。葉鞘平滑無毛,疏鬆裹莖;葉片內卷呈針狀,長2-5(分櫱葉片長可達8)厘米,寬2-3.5毫米;
上面及邊緣粗糙,近基部疏生軟毛,下面平滑無毛。穗狀花序卵圓形或長圓狀卵圓形,長3-7.5厘米,寬1-1.5厘米;小穗緊密排列而偏於1側,長10-13毫米,含4-6小花;
穎圓狀披針形,先端銳尖或漸尖至具短尖頭,具有柔毛尤以上部為多,第一穎長5-6毫米,具3脈,稀少有具4脈,第二穎長6-7毫米,常具5脈;
外稃密生柔毛,具5脈,第一外稃長7-8毫米,先端具長1-7毫米的小尖頭;內稃稍短於外稃,先端下凹或2裂,脊上部具硬長纖毛,至基部則漸漸消失;花葯黑色。花果期夏末。
Kengyilia thoroldiana (Oliver) J. L. Yang et al. 梭羅以禮草 suo luo yi li cao
Culms densely tufted, 12–15 cm tall, 1- or 2-noded, glabrous. Leaf sheath glabrous; leaf blade involute, 2–5(–8) × 0.2–0.35 cm, abaxial surface glabrous, adaxial surface and margin scabrous.
Spike ovate or oblong-ovate, dense or moderately lax, 3–7.5 × 1–1.5 cm excluding awns; rachis glabrous. Spikelets 10–13 mm, with 4–6 florets. Glumes oblong-lanceolate, villous or only scabrous along midvein, apex acute, acuminate, or pointed; proximal glume 5–6 mm, 3(or 4)-veined; distal glume 6–7 mm, 5-veined. Lemma 5-veined, densely pubescent; first lemma 7–8 mm; awn 1–7 mm.
Palea slightly shorter than lemma, long ciliate along keels distally, apex emarginate or 2-lobed. Anthers black. Fl. and fr. late summer.
Mountain slopes, valleys, river and lake banks; 4700–5100 m. Gansu, Qinghai, Xinjiang, Xizang [India (Sikkim)].
1 Glumes villous; lemma awn 1–2.5 mm; spike dense, 3–4 cm excluding awns. 20a var. thoroldiana 梭羅以禮草(原變種)
+ Glumes only scabrous along midvein; lemma awn 5–7 mm; spike moderately lax, 5–7.5 cm excluding awns. 20b var. laxiuscula 疏穗梭羅以禮草
分類文獻
梭羅草(禾本科圖說)
Roegneria thoroldiana (Oliv.) Keng,耿以禮及陳守良, 南京大學學報 (生物學) 1: 79. 1963;中國高等植物圖鑑5; 80.圖6990. 1976. ——Agropyron thoroldianum Oliv. in Hook. Icon. Pl. 23. t. 262. 1893.
梭羅以禮草分布範圍
分布於中國甘肅,青海,新疆,西藏。