有道词典

简介灌木，稀小乔木。叶常为披针形、卵状披针形或椭圆形，常两面无毛，稀仅在下面有薄毛被，或仅在下面中脉上有毛。花序疏松，常2-20花；总轴长5-35毫米；花萼小；花冠管状、钟状或杯状，5裂，稀6-7裂，白色、蔷薇色、深红色或黄色，有明显的深色斑点，基部有或无蜜腺囊；雄蕊10，稀达14；子房光滑或有腺体及绒毛；花柱无毛或通体有腺体。蒴果圆柱状，长1-2.5厘米。
全世界共有24种3亚种及3变种。中国有21种2亚种及3变种；主要分布于我国西南部。向西经缅甸北部、印度东北部到不丹；向南经越南的东部、马来西亚到印度尼西亚的苏门答腊。
蝶花杜鹃Rhododendron aberconwayi Cowan
迷人杜鹃Rhododendron agastum Balf. f. et W. W. Smith
迷人杜鹃（原变种）Rhododendron agastum Balf.f. & W. W. Sm. var. agastum光柱迷人杜鹃（变种）Rhododendron agastum Balf.f. & W. W. Sm. var. pennivenium (Balf.f. & Forrest) Ming
桃叶杜鹃Rhododendron annae Franch.桃叶杜鹃（原亚种）Rhododendron annae Franch. subsp. annae滇西桃叶杜鹃（亚种）Rhododendron annae Franch. subsp. laxiflorum (Balf.f. & Forrest) Ming
团花杜鹃Rhododendron anthosphaerum Diels
窄叶杜鹃Rhododendron araiophyllum Balf.f. & W. W. Sm.窄叶杜鹃（原亚种）Rhododendron araiophyllum Balf.f. & W. W. Sm. subsp. araiophyllum石生杜鹃（亚种）Rhododendron araiophyllum Balf.f. & W. W. Sm. subsp. lapidosum (Ming) Fang f.
短脉杜鹃Rhododendron brevinerve Chun & Fang
苍山杜鹃Rhododendron dimitrum Balf.f. & Forrest
贡山杜鹃Rhododendron gongshanense Ming
贵州杜鹃Rhododendron guizhouense Fang f.
露珠杜鹃Rhododendron irroratum Franch.露珠杜鹃（原亚种）Rhododendron irroratum Franch. subsp. irroratum红花露珠杜鹃（亚种）Rhododendron irroratum Franch. subsp. pogonostylum (Balf. f. et W. W. Smith) Chamb. ex Cullen et Chamb.
多斑杜鹃Rhododendron kendrickii Nutt.
老君山杜鹃Rhododendron laojunshanense Fang f.
腺绒杜鹃Rhododendron leptopeplum Balf.f. & Forrest
蜡叶杜鹃Rhododendron lukiangense Franch.
蒙自杜鹃Rhododendron mengtszense Balf.f. & W. W. Sm.
乳突杜鹃Rhododendron papillatum Balf.f. & R. E. Cooper
屏边杜鹃Rhododendron pingbianense Fang f.
川西杜鹃Rhododendron sikangense Fang优美杜鹃（变种）Rhododendron sikangense Fang var. exquisitum Ming川西杜鹃（原变种）Rhododendron sikangense Fang var. sikangense
红花杜鹃Rhododendron spanotrichum Balf.f. & W. W. Sm.
光柱杜鹃Rhododendron tanastylum Balf.f. & Kingdon-Ward林芝杜鹃（变种）Rhododendron tanastylum Balf.f. & Kingdon-Ward var. lingzhiense Fang f.光柱杜鹃（原变种）Rhododendron tanastylum Balf.f. & Kingdon-Ward var. tanastylum
本亚组的模式种：露珠杜鹃R.irroratumFranch.
本亚组内有些种类，是世界上著名的观赏花卉，如露珠杜鹃R.irroratumFranch.,桃叶杜鹃R.annaeFranch.,各国已广泛引种栽培。

露珠杜鹃亚组