| 学名(拉丁名) | Salix dunnii |
| 中文名 | 长梗柳 |
| 中文科名 | 杨柳科 |
| 拉丁属名 | Salix |
| 类型 | species |
| 拉丁科名 | Salicaceae |
| 中文属名 | 柳属 |
| 学名(拉丁名) | Salix dunnii |
| 命名人 | C.K. Schneid. (accepted name) |
| 拉丁属名 | Salix |
| 类型 | species |
| 拉丁科名 | Salicaceae |
| 学名(拉丁名) | Salix dunnii |
| 命名人 | C.K. Schneid. |
| 发表年份 | 1916(年) |
| 拉丁属名 | Salix |
| 类型 | species |
| 拉丁科名 | Salicaceae |
| 学名(拉丁名) | Salix dunnii |
| 中文名 | 长梗柳 |
| 拉丁属名 | Salix |
| 类型 | species |
| 拉丁科名 | Salicaceae |
| 学名(拉丁名) | Salix dunnii |
| 中文名 | 长梗柳 |
| 中文科名 | 杨柳科 |
| 拉丁属名 | Salix |
| 类型 | species |
| 拉丁科名 | Salicaceae |
| 中文属名 | 柳属 |
| 学名(拉丁名) | Salix dunnii |
| 发表年份 | 1916(年) |
| 拉丁属名 | Salix |
| 类型 | species |
| 拉丁科名 | Salicaceae |
| 学名 | 状态 | 来源 | 命名人 |
|---|---|---|---|
| Pleiarina dunnii | Synonym | The Plant List | (C.K. Schneid.) N. Chao & G.T. Gong |
| Salix changchowensis | Synonym | The Plant List | Metcalf |
| Salix dunnii var. dunnii | Synonym | The Plant List | |
| Salix dunnii var. tsoongii | Accepted | The Plant List | (W.C. Cheng) C.Y. Yu & S.D. Zhao |
| 1 | Leaves abaxially grayish white, densely appressed villous, adaxially pilose, more densely so when young (15) | a var. dunnii |
| 1 + | Both surfaces of leaves densely grayish white or brownish pubescent (15) | b var. tsoongii |
Shrubs or small trees. Juvenile branchlets purple, densely downy, glabrescent. Stipules semicordate, glandular serrate, both surfaces pilose; petiole 2-3 mm, densely downy, on shoots glandular at apex; leaf blade elliptic or elliptic-lanceolate, 2.5-4 × 1.5-2 cm, abaxially grayish white, densely appressed villous, adaxially pilose, more densely so when young, or both surfaces densely grayish white or brownish pubescent, base broadly cuneate to rounded or shallowly cordate, sparsely serrate or rarely subentire, apex obtuse-rounded or acute, usually apiculate. Male catkin ca. 5 cm × 4 mm, loosely flowered; peduncle ca. 1 cm, with 3-5 leaflets; rachis grayish white downy; bracts ovate or obovate, ca. 1/3 as long as stamens, base of both surfaces downy and ciliate, apex acute or slightly obtuse. Male flower: adaxial gland shortly conical, abaxial gland 3-lobed or not, ca. 1/3 as long as bracts; stamens 3-6; filaments pubescent at base; anthers yellow, ovoid. Female catkin ca. 4 cm, to 6.5 cm in fruit; peduncle with 3-5(or 6) leaflets; rachis densely pubescent; bracts as in male catkin, ca. as long as stipe. Female flower: adaxial gland 3-lobed or not, ca. 1/3 as long as bracts; ovary narrowly ovoid, glabrous, long stipitate; style short; stigma 2-lobed. Fl. Apr, fr. May.
* Near streams. Fujian, N Guangdong, Jiangxi, Zhejiang.
13.长梗柳（中国高等植物图鉴）邓柳（广州植物志）
Salix dunnii Schneid. in Sarg. Pl. Wils. 3: 97. 1916; Hao in Fedde, Rep. Beih. 93: 42. t. 2: 5. 1936, excl. syn. S. chekiangensis Cheng;中国高等植物图鉴, 1: 358. 图716. 1972.——S. changchowensis Metcalf. in Ling. Sci. Journ. 15 (1): 11. 1936;陈嵘, 中国树木分类学, 131. 图96. 1937.侯宽昭, 广州植物志, 378. 1956.
13a．长梗柳（原变种）图版29：6
var. dunnii
灌木或小乔木。当年生枝紫色，密生柔毛，后无毛。叶椭圆形，或椭圆状披针形，长2.5-4厘米，宽1.5-2厘米，先端钝圆或急尖，常有一短尖头，基部阔楔形至圆形，上面有稀疏柔毛，沿中脉稍密，下面灰白色，密生平伏长柔毛，幼叶两面毛很密，叶缘有稀疏的腺锯齿，稀近全缘；叶柄短，长约2-3毫米，有密柔毛；萌枝叶叶柄先端具腺点；托叶半心形，有腺锯齿，两面被毛。雄花序长约5厘米，粗约4毫米，疏花；花序梗长约1厘米，其上着生有3-5枚正常叶；轴有密灰白色柔毛；雄蕊3-6，花丝基部具短柔毛，花药卵球形，黄色；苞片卵形或倒卵形，先端尖或稍钝，长为雄蕊的1/3，两面基部及边缘有柔毛；腺体2,等长或背腺稍长，腹腺短圆锥形，不分裂，背腺不分裂或3裂，两侧裂片小，约为苞片长的1/3，雌花序较短，长约4厘米；花序梗上生有3-5(6)叶；轴有密短柔毛；子房狭卵形至披针形，无毛，具长柄，花柱极短，柱头2裂；苞片与子房柄等长，特征同雄花；仅具腹腺，不分裂或3裂约为苞片长的1/3,果序长可达6.5厘米。花期4月，果期5月。
产福建、广东（北部）、江西及浙江等省。生于溪流旁。模式标本采自福建。
本种与南川柳S. rosthornii Seemen相似，其主要区别在于本种叶较小。且两面（尤其是下面）有毛。
13b. 钟氏柳（变种）
var. tsoongii (Cheng) C. Y. Yu et S. D. Zhao, comb. nov. ——S. tsaongii Cheng in Contr. Biol. Lab. Sci. Soc. China, Bot. 10 (1): 68. f. 7. A-C. 1935; Hao in Fedde, Rep. Beih. 93: 41. 1936, pro syn. S. wilsonii Seemen.
与原变种的区别点为叶两面密被灰白色或稍带褐色的短绒毛，基部圆形、宽楔形或浅心形。
产浙江东部。生河边。模式标本采自奉化。
标本份数
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