察隅矮柳查看源代码讨论查看历史
察隅矮柳 |
中文名:察隅矮柳 学 名:Salix zayulica C. Wang et C. F. Fang 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:察隅矮柳 分布区域:中国西藏 |
察隅矮柳(chá yú ǎi liǔ,学名 Salix zayulica C. Wang et C. F. Fang),矮小灌木,主干斜升,常生有不定根,高10-30厘米。当年生枝密被长柔毛;一年生 枝和老枝紫红色,无毛。 [1]
察隅矮柳形态特征
矮小灌木,主干斜升,常生有不定根,高10-30厘米。当年生枝密被长柔毛;一年生 枝和老枝紫红色,无毛。
叶倒卵状长圆形,长圆状椭圆形,稀倒披针形,长2-4.5厘米,宽7-12毫米,先端急尖,基部楔 察隅矮柳 形,上面深绿色,伏生长柔毛,叶脉明显凹下,下面灰白色,密被伏生长柔毛,侧脉6-7对,明显隆起,全缘或有不明显的腺齿尖;叶柄极短,长仅2-3毫米。果序着生于当年生枝顶端,长约4厘米,粗约7-8毫米,子房(果序中残留的未发育的)卵形,长2毫米,无柄,密被柔毛,花柱红色,长约1毫米,2中裂,柱头2裂,裂片椭圆形或近头状;苞片椭圆形,长约等于子房的1/2,外面及边缘密被白长毛;仅1腹腺,红色,卵形,先端截形。
蒴果,长约3毫米。雄株未见。果期7月中、下旬。 [2]
Shrubs low, to 30 cm tall; trunk ascending, rooting. Branchlets purple, glabrous; juvenile branchlets densely villous. Petiole short; leaf blade obovate-oblong or oblong-elliptic, rarely oblanceolate, 2-4.5 × 0.7-1.2 cm, abaxially grayish white, densely appressed villous, adaxially dull green, appressed villous, base cuneate, margin entire or indistinctly glandular dentate, apex acute; lateral veins 6 or 7 on each side of midvein, raised abaxially, impressed adaxially. Male catkin unknown. Fruiting catkin terminal, ca. 4 cm × 7-8 mm; bracts elliptic, ca. 1/2 as long as ovary, abaxially and marginally densely long white pubescent. Female flower: adaxial gland ovate, apex red, truncate; ovary ovoid, ca. 2 mm, densely downy, sessile; style red, ca. 1 mm, 2-parted; stigma 2-cleft, with elliptic or subcapitate lobes. Capsule ca. 3 mm. Fr. Jul.
- Mountain slopes; circa 3600 m. SE Xizang
察隅矮柳生长环境
生长于海拔3600米的山坡砾石滩上。