察隅矮柳
察隅矮柳 |
中文名:察隅矮柳 學 名:Salix zayulica C. Wang et C. F. Fang 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:察隅矮柳 分布區域:中國西藏 |
察隅矮柳(chá yú ǎi liǔ,學名 Salix zayulica C. Wang et C. F. Fang),矮小灌木,主幹斜升,常生有不定根,高10-30厘米。當年生枝密被長柔毛;一年生 枝和老枝紫紅色,無毛。 [1]
目錄
察隅矮柳形態特徵
矮小灌木,主幹斜升,常生有不定根,高10-30厘米。當年生枝密被長柔毛;一年生 枝和老枝紫紅色,無毛。
葉倒卵狀長圓形,長圓狀橢圓形,稀倒披針形,長2-4.5厘米,寬7-12毫米,先端急尖,基部楔 察隅矮柳 形,上面深綠色,伏生長柔毛,葉脈明顯凹下,下面灰白色,密被伏生長柔毛,側脈6-7對,明顯隆起,全緣或有不明顯的腺齒尖;葉柄極短,長僅2-3毫米。果序着生於當年生枝頂端,長約4厘米,粗約7-8毫米,子房(果序中殘留的未發育的)卵形,長2毫米,無柄,密被柔毛,花柱紅色,長約1毫米,2中裂,柱頭2裂,裂片橢圓形或近頭狀;苞片橢圓形,長約等於子房的1/2,外面及邊緣密被白長毛;僅1腹腺,紅色,卵形,先端截形。
蒴果,長約3毫米。雄株未見。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
察隅矮柳生長環境
生長於海拔3600米的山坡礫石灘上。