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粉红爆杖花Rhododendron duclouxii Levl.

粉红爆杖花Rhododendron duclouxii Levl.

别名:密通花(昆明)

科名:杜鹃花科 Ericaceae

属名:杜鹃属 Rhododendron

《中国植物志》第57(1)卷204页
  184. 粉红爆杖花(杂交种)(云南植物志) 密通花(昆明)
  Rhododendron × duclouxii Levl (in Bull. Soc. Agr. Sarthe 39: 46.1903, pro species)(R. spiciferum × R.spinuliferum); Hand.-Mazz. Symb. Sin. 7:775. 1936; 云南植物志4: 550. 1986. —— R. spinuferum auct.non Franch.: Hutch. in Steven. son, Spec. Rhodod. 606. 1930, pro parte; Cullen in Not. Bot. Gard. Edinb. 39: 85. 1980, pro parte
  小灌木,高0.3-1米;枝条较碎米花(R. spiciferum)粗壮。幼枝密被灰白色短柔毛和伸展的长刚毛。叶片狭长圆形或长圆状椭圆形,长2.8-4厘米,宽1-1.7厘米,上面深绿色,疏生刚毛,有时并有短柔毛,下面淡绿色,沿中脉、侧脉有时全部被灰白色柔毛和黄褐色鳞片,边缘反卷,疏生短刚毛,中脉、侧脉和网脉在下面明显隆起。花萼浅杯状,无明显裂片,外面密被鳞片和短柔毛,边缘有长缘毛;花冠筒状钟形,长1.4-1.8厘米,花冠筒基部近白色,向花冠上部色渐深,呈桃红色,玫瑰红色或粉红色,于中部或中部以上5裂,裂片长圆形,直立,略微开展,外面疏生淡黄色腺鳞;雄蕊露出或几乎不露出,花药紫黑色,花丝下部密被白色短柔毛,花柱伸出,长过雄蕊,基部密被柔毛。花期2-4月。
  产大理及昆明近郊。生于松林林缘或山谷林下,海拔约2200米。模式标本采自昆明。
  本种的体态、花形、花色等特征均明显介于碎米花 R. spiciferum 和爆杖花 R. spinuliferum 之间,无疑系一自然杂交种,故采纳了 Handel-Mazzetti 的处理。
形态特征:小灌木,高0.3—1米;枝条较碎米花(R.spiciferum)粗壮。幼枝密被灰白色短柔毛和伸展的长刚毛。叶片狭长圆形或长圆状椭圆形,长2.8—4厘米,宽1—1.7厘米,上面深绿色,疏生刚毛,有时并有短柔毛,下面淡绿色,沿中脉、侧脉有时全部被灰白色柔毛和黄褐色鳞片,边缘反卷,疏生短刚毛,中脉、侧脉和网脉在下面明显隆起。花萼浅杯状,无明显裂片,外面密被鳞片和短柔毛,边缘有长缘毛;花冠筒状钟形,长1.4—1.8厘米,花冠筒基部近白色,向花冠上部色渐深,呈桃红色,玫瑰红色或粉红色,于中部或中部以上5裂,裂片长圆形,直立,略微开展,外面疏生淡黄色腺鳞;雄蕊露出或几乎不露出,花药紫黑色,花丝下部密被白色短柔毛,花柱伸出,长过雄蕊,基部密被柔毛。 花期2—4月。
产地分布:产大理及昆明近郊。生于松林林缘或山谷林下,海拔约2 200米。模式标本采自昆 明。
本种提示:本种的体态、花形、花色等特征均明显介于碎米花R.Spiciferum和爆杖花R.Spinuliferum之间,无疑系一自然杂交种,故采纳了Handel—Mazzetti的处理。
参考文献:Rhododendron × duclouxii L6v1.(in Bull.Soc.Agr.Sarthe 39:46.1903,prospemas)(R.Spiciferm × R.Spinuliferum);Hand.—Mazz.Ssm~b.Sin.7:775.1936;云南植物志4:550.1986.--R.Spinulife auct.Non Franch.:Hutch.In Steven—son,Spec.Rhodod.606.1930,pro parte;Cullen in Not.Bot.Card.Edinb.39:85.1980,pro parte

《Flora of China》 Vol. 14 (2005)
Rhododendron x duclouxii  H. Léveillé
粉红爆杖花   fen hong bao zhang hua
Small shrubs, 0.3–1 m tall; young shoots densely gray-white-pubescent, mixed with spreading long hispid hairs. Leaf blade narrowly oblong or oblong-elliptic, 2.8–4 × 1–1.7 cm; abaxial surface pale green, sometimes gray-white-pubescent and yellowish brown-scaly along veins; adaxial surface deep green, sparsely hispid, sometimes pubescent; veins conspicuously raised abaxially. Calyx shallowly cup-shaped, without conspicuous lobes, densely scaly abaxially, pubescent; corolla tubular-campanulate, 5-lobed to below middle, base almost white, turning to peach or rosy red above, 1.4–1.8 cm, outer surface sparsely glandular scaly; lobes erect, slightly open, oblong; stamens not or only slightly exserted from corolla; filaments densely pubescent below, anthers purplish black; style exserted from corolla, longer than stamens; base densely pubescent. Fl. Feb–Apr.
Valley forests, coniferous forest margins; ca. 2200 m. Yunnan.
This entity is a hybrid between Rhododendron spiciferum and R. spinuliferum.

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