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小叶山毛柳

小叶山毛柳

中文名:小叶山毛柳

学 名:Salix pseudopermollis

界:植物界

门:被子植物门Angiospermae

纲:双子叶植物纲Dicotyledoneae

目:杨柳目

科:杨柳科Salicaceae

属:柳属Salix

种:小叶山毛柳

分布区域:中国陕西

小叶山毛柳(学名:Salix pseudopermollis)为杨柳科柳属的植物,是中国的特有植物。分布在中国大陆的陕西等地,生长于海拔540米的地区,常生长在路旁,目前尚未由人工引种栽培。 [1]

目录

小叶山毛柳形态特征

灌木或乔木。枝细柔,1-2年生枝密被短绒毛。芽棕色,无毛。叶倒披针形,长3-4厘米,宽7-8毫米,中部以上宽,先端短渐尖,基部楔形,边缘有锯齿,上面绿色,下面淡绿色,初有短绒毛,后无毛;叶柄长3-5毫米,密被绒毛。

花先叶开放,雌花序细圆柱形,长约2厘米,粗4毫米,果期伸长,无花序梗,基部具2枚披针形鳞片;鳞片背面脉上有长毛; 苞片卵形,黑色,有疏长毛,与子房等长;腺体1,腹生,细小;

子房卵形,被绒毛,无柄,花柱长,几与子房等长,柱头头状,全缘或2裂。

雄株未见。花期3月,果期4-5月。[2]

Salix pseudopermollis C. Y. Yu et Ch. Y. Yang,东北林学院植物研究室汇刊, 9: 101. 1980.

Shrubs or trees. Branchlets slender; 1- and 2-year-old branchlets blackish, densely tomentulose. Buds reddish brown, glabrous. Leaves alternate; petiole 3-5 mm, tomentose; leaf blade oblanceolate, broadest distally, ca. 3-4 cm × 7-8 mm, abaxially greenish, at first tomentulose, glabrescent, adaxially green, base cuneate, margin serrate, apex shortly acuminate. Flowering precocious. Catkins alternate. Male catkin 2-3 cm × ca. 7 mm, subsessile, with 2 or 3 leaflets at base; bracts yel-lowish green proximally, purple distally, ca. 1.5 mm, villous. Male flower: stamens 2, connate throughout, 3-4 mm, with dense hairs at base; anthers globose, 4-loculed. Female catkin terete, ca. 2 cm × 4 mm, elongate in fruit, sessile, with 2 lanceolate leaflets at base; bracts black, ovate, ca. as long as ovary, sparsely long pubescent. Female flower: ovary ovoid, tomentose, sessile; style long, nearly as long as ovary; stigma capitate, entire or 2-lobed. Fl. Mar, fr. Apr-May.

小叶山毛柳生长环境

生长于海拔540-2950米的路旁,山谷。

小叶山毛柳分布范围

产自中国陕西南部。

参考来源

  1. 小叶山毛柳, 植物智, 2020-01-18
  2. 《中国植物志》 第20(2)卷 (1984) >> 361页 PDF >> 小叶山毛柳 Salix pseudopermollis