黄山杜鹃
分类:植物科普
黄山杜鹃 Rhododendron maculiferum subsp. anwheiense (E. H. Wilson) D. F. Chamberlain 
          常绿灌木,高1.5-5米;树皮黑灰色,薄片状脱落;幼枝棕红色,密被白色绒毛,老枝浅黄褐色,有细裂纹。冬芽卵圆形,长1-1.5厘米,近于无毛。叶革质,卵状披针形的或卵形椭圆形,长4-11厘米,宽2.5-4.2厘米,先端钝至圆形,略有小尖头,基部圆形,稀浅心形,幼时边缘有细缘毛,上面绿色,无毛,下面黄绿色,中脉在上面微凹下,下面凸出,被淡褐色绒毛,尤以下半部为密,侧脉12-17对,在上面稍凹下,下面不明显;叶柄圆柱形,长1.3-2.2厘米,幼时密被白色绒毛,成长后近于无毛。顶生总状伞形花序,有花7-10朵;总轴长1.2-2.5厘米,密被柔毛;花梗1.7-2.5厘米,后脱落;花萼小,长2-3毫米,裂齿5,三角形,无毛;花冠宽钟形,长3.7-4厘米,直径3.8-4.2厘米,红色至白色,内面基部有深紫色斑块,裂片5,宽卵形,长1厘米,宽1.2-1.3厘米,顶端有浅缺刻;雄蕊10,不等长,长1.6-2.7厘米,花丝白色,基部有白色微柔毛,花药长圆状椭圆形,紫黑色,长1.5-1.9毫米;子房圆锥形,长4.2毫米,无毛,花柱长2.6厘米,无毛,柱头小,绿色,头状,宽约1.6毫米。蒴果圆柱形,长1.5-2厘米,直径4-5毫米,直或微弯曲,6-7室,绿色,有肋纹,被锈色刚毛或几无毛。花期5-6月,果期9-10月。 
           分布于海拔700-1700米林缘。安徽,广西,湖南,江西,浙江。                      Shrubs, evergreen, 1.5–5 m tall; bark gray-black, usually falling off in flakes; young shoots brown, pale white tomentose. Petiole 13–22 mm, white-tomentose when young; Leaf blade ovate-lanceolate or ovate-elliptic. 4–11 × 2.5–4.2 cm; base rounded, rarely slightly cordate; margin ciliate; apex obtuse or rounded, apiculate; abaxial surface glabrous at maturity, midrib densely tomentose near base; adaxial surface green, glabrous; midrib raised abaxially, grooved adaxially; lateral veins 12–17-paired. Inflorescence 7–10-flowered; rachis 12–25 mm, densely tomentose. Pedicel 1.4–2.5 cm, tomentose or glabrous; calyx teeth 5, 2–3 mm, tomentose or glabrous; corolla open-campanulate, white to pale pink, with purple blotch and a few flecks, 3.7–4 cm, lobes 5, ca. 1 × 1.2–1.3 cm; stamens 10, unequal, 1.6–2.7 cm, filaments pubescent at base; ovary conoid, ca. 4.2 mm, pale brown-tomentose or glabrous; style ca. 2.6 cm, glabrous. Capsule cylindric, curved, 15–20 × 4–5 mm, rufous-tomentose or glabrous. Fl. May–Jun, fr. Sep–Oct. 
          Forest margins; 700–1700 m. Anhui, Guangxi, Hunan, Jiangxi, Zhejiang.

黄山杜鹃花期

黄山杜鹃叶片

黄山杜鹃果期

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