皺紋柳
皺紋柳 |
中文名:皺紋柳 學 名:Salix vestita Pursch 界:植物界 門:被子植物門 綱:雙子葉植物綱 亞 綱:原始花被亞綱 目:楊柳目 科:楊柳科 屬:柳屬 種:皺紋柳 分布區域:中國新疆, |
皺紋柳,為楊柳科小灌木,高約1米。小枝直立狀或稍升起,較粗,無毛,栗褐色,有光澤。芽卵圓形,褐色,被疏絨毛。蒴果卵圓形,長3-5毫米,黃褐色,被柔毛。花期6月,果期7-8月。 [1]
目錄
皺紋柳形態特徵
皺紋柳, 小灌木,高約1米。小枝直立狀或稍升起,較粗,無毛,栗褐色,有光澤。芽卵圓形,褐色,被疏絨毛。
葉橢圓形,卵圓形,倒卵圓形,長4-5厘米,寬1-2厘米,先端鈍,基部圓形或闊楔形,全緣或具疏鈍齒,上面鮮綠色,葉脈凹陷,有鱗斑狀皺紋,下面密被白色細長毛,側脈和網脈突出;葉柄長約5毫米,上面有溝槽,無毛,下面常有白色長毛。
花與葉近同時或葉後開放,花序梗具小葉和絲狀柔毛,側生於小枝上,花序細圓柱形,長1-2厘米,粗3-4毫米;雌花序在果期長達3-4凰米;苞片近倒卵圓形,先端鈍,褐色或棕色,邊緣密生短緣毛;
雄蕊2,花絲離生,基部密生白色柔毛,花葯圓形,黃色;子房長卵圓形,密被絨毛,有子房柄,花柱幾缺,柱頭2深裂,淡黃褐色;腺體1,腹生,2淺裂,長約1毫米。
蒴果卵圓形,長3-5毫米,黃褐色,被柔毛。[2]花期6月,果期7-8月。
Salix vestita Pursch. Fl. Amer. sept. 2: 610. 1814; Anderss. in DC. Prodr. 16 (2): 300. 1868; Nas. in Kom. Fl. URSS, 5: 34. t. 1: 1. 1936.
Shrubs to 1 m tall. Branchlets erect or ascending, chestnut brown, slightly thick, glabrous, shiny. Buds brown, ovoid, sparsely tomentose. Petiole ca. 5 mm, notched adaxially, glabrous; leaf blade elliptic, ovoid, or obovoid, 4-5 × 1-2 cm, densely long white pubescent, adaxially fresh green, wrinkled, base rounded or broadly cuneate, margin entire or remotely crenate, apex obtuse; veins raised abaxially, impressed adaxially.
Flowering nearly coetaneous or serotinous. Catkins 1-2 cm × 3-4 mm; bracts brown or brownish red, subobovate, ciliate, apex obtuse. Male flower: stamens 2, free, downy at base; anthers yellow, ovoid. Fruiting catkin to 4 cm. Female flower: adaxial gland 2-lobed, ca. 1 mm; ovary long ovoid, tomentose, stipitate; style nearly absent; stigma 2-parted, yellowish brown. Capsule yellowish brown, ovoid, 3-5 mm, downy. Fl. Jun, fr. Jul-Aug. 2n = 38.
皺紋柳生長環境
皺紋柳生長於海拔1900米至2000米的地區,多生在落葉松和西伯利亞紅松林下。