岩壁墊柳檢視原始碼討論檢視歷史
| 岩壁墊柳 |
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中文名:岩壁墊柳 拉丁學名:Salix scopulicola Mao et W. Z. Li 界:植物界 門:被子植物門 綱:雙子葉植物綱 亞 綱:原始花被亞綱 目:楊柳目 科:楊柳科 屬:柳屬 種:岩壁墊柳 |
岩壁墊柳 （學名：Salix scopulicola Mao et W. Z. Li）為楊柳科，柳屬的植物類。墊狀灌木，高不到10厘米。主幹平臥生根，枝平臥或上升；葉卵狀長圓形，有乳頭狀突起；葉柄長1—2毫米，下面有柔毛；花序與葉同時開放，深紅色，頭狀。花期8月。 [1]
岩壁墊柳形態特徵
墊狀灌木，高不到10厘米。主幹平臥生根，枝平臥或上升，當年生枝被長柔毛，前一年的生枝無毛，栗褐色；芽卵形，近無毛，黃紅色。
葉卵狀長圓形，長4—8毫米，寬2—4毫米，先端急尖或略尖，基部鈍或近圓形，上面綠色，近無毛，有乳頭狀突起，中脈下凹，側脈不明顯，下面幼時密被銀白色柔毛，後漸脫落，略呈白色，中脈凸起，側脈明顯，約4對，全緣；葉柄長1—2毫米，下面有柔毛。
花序與葉同時開放，深紅色，頭狀，長5毫米，徑4毫米，生當年枝頂端，具6—8花；雄蕊2，花絲離生，無毛，稍長於苞片；苞片長圓形，外面疏被銀白色曲柔毛，先端近圓形，有密緣毛；腺體2，腹、背腺皆瓶狀，近等大，長為苞片之半。
雌花序未詳。花期8月。[2]
Shrubs cushion-shaped, to. 10 cm tall; trunk creeping. Branches procumbent or decumbent; juvenile branchlets villous, 1-year-old branchlets chestnut brown, glabrous. Buds reddish, ovate, subglabrous. Petiole 1-2 mm, downy; leaf blade ovate-oblong, 4-8 × 2-4 mm, abaxially pale, dark downy when young, later glabrescent, adaxially green, subglabrous, papillate, base obtuse or rounded, margin entire, apex acute or subacute; midvein raised abaxially, impressed adaxially; lateral veins conspicuous, ca. 4 on each side of midvein abaxially, obscure adaxially. Catkins terminal on young shoots, ca. 5 cm × 4 mm, 6-8-flowered; bracts oblong, abaxially dark crisped downy at margin, apex rounded, densely ciliate. Male flower: glands adaxial and abaxial, subequal, ca. 1/2 as long as bracts; stamens 2, free; filaments glabrous, slightly longer than bracts. Female catkin unknown. Fl. Jul.
- About 4000 m. Yunnan (Gongshan Drungzu Nuzu Zizhixian: Dulong Jiang valley)
A. K. Skvortsov notes that this species is very near or possibly the same as Salix oreophila.
The name Salix hylematica C. K. Schneider var. scopulicola (Mao & W. Z. Li) N. Chao & G. T. Gong (J. Sichuan. For. Sci. Technol. 27: 10. 2006) appeared after the corresponding Flora volume.
岩壁墊柳生長環境
生海拔4000米的陡岩上。[3]