栅枝垫柳Salix clathrata
中文名（Chinese Name）：栅枝垫柳
学名（Scientific Name）：Salix clathrata Hand.-Mazz.
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）： Salix clathrata var. rockiana Hand.-Mazz.
科属（Family & Genus）：杨柳科（Salicaceae）柳属
形态特征（Description）：垫状灌木，高仅数厘米；主干及枝条匍匐生长，但不生不定根，粗壮。枝条极多而互相 交错呈栅栏状，节明显；幼枝红褐色，被短茸毛，后变秃净，老枝暗褐色。芽小，长约3毫米，卵球形，扁平，被疏短柔毛。叶椭圆形或倒卵形，长15(30)毫米，宽10(15)毫米，革质，两端近圆形，上面亮绿色，无毛，有亮光，具褶皱，叶脉明显凹下，下面灰白色，有腊质层，幼叶下面散生短柔毛，后无毛，叶脉隆起，全缘，反卷，幼时具疏缘毛；叶柄长约4(-7)毫米，红色，初被短柔毛。花先叶开放，花序椭圆形，长约6毫米，粗约3毫米，花序梗极短，有2-3个小叶，花多而密，轴粗壮，密被短柔毛；苞片倒卵圆形，先端圆，上部紫红色，外面及边缘有疏长柔毛；雄蕊2,长约3毫米，约为苞片的2倍，基部有长柔毛，花药小，圆球形，红色；腺体2，腹腺细圆柱形，基部稍宽，约为苞片长的1/4,背腺稍宽而短；子房卵形，无柄，光滑无毛，花柱明显，2裂，柱头2裂，仅具腹腺，细圆柱形。果序长达2厘米，蒴果狭卵形，长4毫米，无柄或有短柄。花期7月，果期8-9月。
分布（Distribution）：产四川西部、云南西北部及西藏。生于海拔4000米以上裸露的岩石上。模式标本采自四川盐源。
用途（Use）：
引自中国植物志英文版：FOC Vol. 4 Page 215
Salix clathrata Handel-Mazzetti, Symb. Sin. 7: 86. 1929.
栅枝垫柳 zha zhi dian liu | Salicaceae | Salix
Salix clathrata var. rockiana Handel-Mazzetti.
Shrubs procumbent; trunk and branches spreading, not rooting, stout, many branched, appearing fencelike, dull brown. Young branchlets russet, shortly hirsute, glabrescent. Buds ovoid, ca. 3 mm, sparsely pubescent. Petiole red, 4(-7) mm; leaf blade elliptic or obovate, 1.5(-3) × 1(-1.5) cm, leathery, abaxially grayish white, with bloom, glabrescent, adaxially bright green, glabrous, wrinkled, shiny, both ends subrounded, margin entire, revolute; veins raised abaxially, conspicuously impressed adaxially. Flowering precocious. Catkins ellipsoid, ca. 6 × 3 mm, densely flowered; peduncle very short, with 2 or 3 leaflets; rachis stout, pubescent; bracts purplish red distally, obovoid, abaxially and marginally sparsely villous. Male flower: adaxial gland cylindric, abaxial gland broad and short; stamens 2, ca. 3 mm, ca. 3 × as long as bracts, basally villous; anthers red. Fruiting catkin to 2 cm. Female flower: adaxial gland cylindric; ovary ovoid, glabrous, sessile; style conspicuous, 2-cleft; stigma 2-lobed. Capsule narrowly ovoid, ca. 4 mm; stipe short or absent. Fl. Jul, fr. Aug-Sep.
* Rocks; circa 4000 m. W Sichuan, Xizang, NW Yunnan
A. K. Skvortsov indicates that this species resembles Salix sclerophylla and might be better placed in sect. Sclerophyllae.
（责任编辑：徐晔春）
学名（Scientific Name）：Salix clathrata Hand.-Mazz.
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）： Salix clathrata var. rockiana Hand.-Mazz.
科属（Family & Genus）：杨柳科（Salicaceae）柳属
形态特征（Description）：垫状灌木，高仅数厘米；主干及枝条匍匐生长，但不生不定根，粗壮。枝条极多而互相 交错呈栅栏状，节明显；幼枝红褐色，被短茸毛，后变秃净，老枝暗褐色。芽小，长约3毫米，卵球形，扁平，被疏短柔毛。叶椭圆形或倒卵形，长15(30)毫米，宽10(15)毫米，革质，两端近圆形，上面亮绿色，无毛，有亮光，具褶皱，叶脉明显凹下，下面灰白色，有腊质层，幼叶下面散生短柔毛，后无毛，叶脉隆起，全缘，反卷，幼时具疏缘毛；叶柄长约4(-7)毫米，红色，初被短柔毛。花先叶开放，花序椭圆形，长约6毫米，粗约3毫米，花序梗极短，有2-3个小叶，花多而密，轴粗壮，密被短柔毛；苞片倒卵圆形，先端圆，上部紫红色，外面及边缘有疏长柔毛；雄蕊2,长约3毫米，约为苞片的2倍，基部有长柔毛，花药小，圆球形，红色；腺体2，腹腺细圆柱形，基部稍宽，约为苞片长的1/4,背腺稍宽而短；子房卵形，无柄，光滑无毛，花柱明显，2裂，柱头2裂，仅具腹腺，细圆柱形。果序长达2厘米，蒴果狭卵形，长4毫米，无柄或有短柄。花期7月，果期8-9月。
分布（Distribution）：产四川西部、云南西北部及西藏。生于海拔4000米以上裸露的岩石上。模式标本采自四川盐源。
用途（Use）：
引自中国植物志英文版：FOC Vol. 4 Page 215
Salix clathrata Handel-Mazzetti, Symb. Sin. 7: 86. 1929.
栅枝垫柳 zha zhi dian liu | Salicaceae | Salix
Salix clathrata var. rockiana Handel-Mazzetti.
Shrubs procumbent; trunk and branches spreading, not rooting, stout, many branched, appearing fencelike, dull brown. Young branchlets russet, shortly hirsute, glabrescent. Buds ovoid, ca. 3 mm, sparsely pubescent. Petiole red, 4(-7) mm; leaf blade elliptic or obovate, 1.5(-3) × 1(-1.5) cm, leathery, abaxially grayish white, with bloom, glabrescent, adaxially bright green, glabrous, wrinkled, shiny, both ends subrounded, margin entire, revolute; veins raised abaxially, conspicuously impressed adaxially. Flowering precocious. Catkins ellipsoid, ca. 6 × 3 mm, densely flowered; peduncle very short, with 2 or 3 leaflets; rachis stout, pubescent; bracts purplish red distally, obovoid, abaxially and marginally sparsely villous. Male flower: adaxial gland cylindric, abaxial gland broad and short; stamens 2, ca. 3 mm, ca. 3 × as long as bracts, basally villous; anthers red. Fruiting catkin to 2 cm. Female flower: adaxial gland cylindric; ovary ovoid, glabrous, sessile; style conspicuous, 2-cleft; stigma 2-lobed. Capsule narrowly ovoid, ca. 4 mm; stipe short or absent. Fl. Jul, fr. Aug-Sep.
* Rocks; circa 4000 m. W Sichuan, Xizang, NW Yunnan
A. K. Skvortsov indicates that this species resembles Salix sclerophylla and might be better placed in sect. Sclerophyllae.
（责任编辑：徐晔春）踩一下[0]
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