小葉山毛柳檢視原始碼討論檢視歷史
小葉山毛柳 |
中文名:小葉山毛柳 學 名:Salix pseudopermollis 界:植物界 門:被子植物門Angiospermae 綱:雙子葉植物綱Dicotyledoneae 目:楊柳目 科:楊柳科Salicaceae 屬:柳屬Salix 種:小葉山毛柳 |
小葉山毛柳(學名:Salix pseudopermollis)為楊柳科柳屬的植物,是中國的特有植物。分布在中國大陸的陝西等地,生長於海拔540米的地區,常生長在路旁,目前尚未由人工引種栽培。 [1]
小葉山毛柳形態特徵
灌木或喬木。枝細柔,1-2年生枝密被短絨毛。芽棕色,無毛。葉倒披針形,長3-4厘米,寬7-8毫米,中部以上寬,先端短漸尖,基部楔形,邊緣有鋸齒,上面綠色,下面淡綠色,初有短絨毛,後無毛;葉柄長3-5毫米,密被絨毛。
花先葉開放,雌花序細圓柱形,長約2厘米,粗4毫米,果期伸長,無花序梗,基部具2枚披針形鱗片;鱗片背面脈上有長毛; 苞片卵形,黑色,有疏長毛,與子房等長;腺體1,腹生,細小;
子房卵形,被絨毛,無柄,花柱長,幾與子房等長,柱頭頭狀,全緣或2裂。
雄株未見。花期3月,果期4-5月。[2]
Salix pseudopermollis C. Y. Yu et Ch. Y. Yang,東北林學院植物研究室彙刊, 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.
小葉山毛柳生長環境
生長於海拔540-2950米的路旁,山谷。