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香花白杜鵑

中文名:香花白杜鵑

拼 音:xiāng huā bái dù juān

學 名:Rhododendron ciliipes

Hutch. (1930)

界:植物界

亞 界:綠色植物亞界

總 門:輪藻總門

門:木賊門(有胚植物門)

亞 門:木賊亞門(維管植物亞門)

綱:木蘭綱(被子植物綱)

亞 綱:薔薇亞綱

超 目:菊超目

目:杜鵑花目

科:杜鵑花科

屬:杜鵑花屬

種:香花白杜鵑

香花白杜鵑(學名:Rhododendron ciliipes Hutch.)是灌木,生於雜木林中、山脊松林下、陡岩或山谷邊腐殖土覆蓋的礫石上,海拔2500-3000米。產自雲南西至西北部。 [1]

目錄

香花白杜鵑形態特徵

香花白杜鵑 灌木,高1-2米。幼枝密被褐色剛毛和鱗片,老枝灰色,無毛也無鱗片。

葉片長圓形、卵形或卵狀橢圓形,長4-7.5厘米,寬2-3.5厘米,頂端驟然漸尖或鈍尖,基部圓形或稍狹而成寬楔形,葉緣密生細長纖毛,以後脫落,上面或多或少散生鱗片,下面淡綠色,被黃褐色鱗片,鱗片大小不一,相距為其直徑的1-2倍,中脈在上面略下陷,在下面凸起,側脈7-8對,纖細,在兩面均不明顯;葉柄短,長5-8毫米,被鱗片和剛毛。

花序頂生,1(-2)花;花梗長0.6-1厘米,密被鱗片;花萼不發育呈環狀,或發育長2-6毫米,外面密被鱗片,邊緣密生長睫毛或近無毛;花冠芳香,寬漏斗狀,長5.5-7厘米,白色帶淡紅暈,內面基部有黃綠色斑塊,外面被鱗片,筒部被灰白色短柔毛;雄蕊10,不等長,長達花冠裂片中部,花絲下部被柔毛;子房6室,密被鱗片,花柱與花冠近等長或伸出花冠,下半部疏被鱗片。

蒴果長圓狀卵形,長1.5-2厘米,密被褐色鱗片。花期4-5月,果期7月以後。

Shrubs, 1–2 m tall; old branches gray, glabrous; young shoots scaly, densely brown-hispid. Petiole 5–8 mm, scaly, hispid; leaf blade oblong, ovate or ovate-elliptic, 4–7.5 × 2–3.5 cm; base rounded or broadly cuneate; apex acute or acuminate; abaxial surface pale green, scales 1–2 × their own diameter apart, brown; adaxial surface sparsely scaly; midrib flat raised abaxially, slightly concave adaxially; lateral veins 7–8-paired, thin, inconspicuous on both sides. Inflorescence terminal, 1(or 2)-flowered; bractlets present at anthesis, linear-spathulate, longer than pedicel, densely white-pubescent outside. Flowers fragrant. Pedicel 0.6–1 cm, densely scaly; calyx undeveloped or 2–6 mm, scaly abaxially, dense; corolla broadly funnelform, white tinged with red, with yellowish green markings at base within, 5.5–7 cm, outer surface scaly, tube gray-white-pubescent; stamens 10, unequal, half as long as corolla; filaments pubescent below; ovary 6-locular, densely scaly; style as long as corolla or slightly longer, basal half sparsely scaly. Capsule cylindric-ovoid, 15–20 mm, densely brown-scaly. Fl. Apr–May, fr. Jul.

Mixed forests, coniferous forests on hilltops, rocky valley sides, cliffs; 2500–3000 m. W Yunnan.

香花白杜鵑生長環境

生於雜木林中、山脊松林下、陡岩或山谷邊腐殖土覆蓋的礫石上,海拔2500-3000米。

香花白杜鵑分布範圍

產自中國雲南西至西北部。模式標本采於雲南龍川江怒江分水嶺,大致在騰衝境內。

參考來源

  1. 香花白杜鵑, 植物智, 2020-01-18