东沟柳
东沟柳 |
中文学名:东沟柳 拉丁学名:Salix donggouxianica C. F. Fang 界:植物界 门:被子植物门Angiospermae 纲:双子叶植物纲Monocotyledoneae 目:裘良目Julianiales 科:杨柳科Salicaceae 属:柳属Salix 种:东沟柳 分布区域:辽宁省 是否人工栽培:否 是否中国特有:是 |
东沟柳(dōng gōu liǔ,学名 Salix donggouxianica C. F. Fang),灌木,高约2米。树皮灰褐色,较光滑;小枝细,无毛,微褐黄色,有黑色斑点;当年生枝绿黄;芽卵形,芽鳞褐黄色,无毛。 [1]
目录
东沟柳形态特征
灌木,高约2米。树皮灰褐色,较光滑;小枝细,无毛,微褐黄色,有黑色斑点;当年生枝绿黄;芽卵形,芽鳞褐黄色,无毛。
叶互生,叶柄短;托叶未见;叶片线状披针形,中部最宽,长3.5-4.5厘米,宽7-8毫米,基部楔形,先端钝尖,两面有疏钝锯齿,中脉明显,黄色,表面绿色,背面稍白色;幼叶稍有长毛,很快脱落。
花序长圆形至短圆柱形,花序梗无或极短,基部无叶或有鳞片状小叶;雄花序长1-2厘米,粗6-7毫米,花药球形,红色,4室,花丝1,长约2毫米,基部有柔毛,腺体1,腹生,苞片倒三角形,长约1毫米,先端截形,内面无毛,外面下部有柔毛,两侧有缘毛,黄绿色或先端策红棕色;
雌花序长1-2.5厘米,粗3.5-5毫米,无梗,基部通常无叶,子房卵形或椭圆形,长1.2-1.5毫米,有柔毛,有的明显的短柄,无花柱,柱头2裂,公1腹腺,苞片匙形,黄绿色或先端微红棕色,外面下部有柔毛,内面无毛,两侧有缘毛。
花期4月下旬。
Shrubs to 2 m tall; bark gray-brown, smooth. Branchlets thin, glabrous, slightly yellow, black spotted; juvenile branchlets green-yellow. Buds ovoid; scales brown-yellow, glabrous. Petiole 1.5-2 mm, glabrous; leaf blade linear-lanceolate, broadest at middle, 3.5-4.5 × 7-8 mm, abaxially pale, adaxially green, both surfaces glabrous, base cuneate, margin loosely obtusely serrate, apex obtusely acute. Male catkin oblong to shortly terete, 1-2 cm × 6-7 mm; peduncle short, with 1 or 2 scalelike leaflets; bracts russet, obdeltoid, ca. 1 mm, ciliate, villous proximally abaxially, apex truncate. Male flower: gland adaxial, terete, ca. 0.3 mm; stamens coadnate; filament 1, villous at base; anther red, ovoid, 4-loculed. Female catkin terete, 1-2.5 cm × 3.5-5 mm; bracts spatulate, ca. 1.4 mm, villous-ciliate proximally abaxially, apex subtruncate. Female flower: gland 1, shortly terete, ca. 0.4 mm; ovary ovoid or ellipsoid, 1.2-1.5 mm, pubescent, shortly stipitate; style absent; stigma 2-lobed. Fl. Apr, fr. May.
- Beach plains. Liaoning (Donggou Xian)
东沟柳生长环境
生于河滩沙地上。
枝条可供编织和柴薪用,并可固定沙滩。
用种子和插条繁殖。
东沟柳分布范围
辽宁省。