粘质杜鹃

小灌木，高达1米，小枝纤细，密被红棕色扁平糙伏毛。叶革质，集生枝端，倒卵形至椭圆状倒卵形或椭圆形，长1-2厘米，宽5-12毫米，先端钝尖，具短凸尖头，基部狭楔形，边缘微反卷，被缘毛，两面被红棕色糙伏毛，叶脉在上面微隆起，下面明显隆起，侧脉3-4对，两面微明显，未达叶缘网结，密被糙伏毛；叶柄长2-6毫米，被糙伏毛。花芽卵球形，有较多的粘质，鳞片阔卵形，边缘具细缘毛。伞形花序具花4-5朵，稀达9朵；花梗长5-7毫米，被红棕色扁平糙伏毛；花萼5裂，裂片三角状披针形，长2-3毫米，边缘具长睫毛；花冠漏斗形，粉红紫色或带白色，长1-13厘米，花冠管圆筒形，长6毫米，外面被长柔毛和短腺毛，内面被短柔毛，裂片5，卵形，长6-7毫米，顶端钝尖，上方3裂片具深红色斑点，外面沿中脊被微柔毛；雄蕊5，不等长，伸出于花冠外，花丝长8-14毫米，被短柔毛；花柱比雄蕊短，3/4以下被微柔毛。蒴果卵球形，长6-7毫米，被红褐色糙伏毛。花期4-5月，果期10-11月。

本种与棒柱杜鹃 R. crassimedium Tam 相近，但不同在于本种的花冠管内外两侧均被长柔毛或微柔毛，花丝、花柱被疏柔毛而相区别^[1]。

产湖南南部，生长环境，生于海拔1800-2000米的林内。

腺花杜鹃Rhododendron adenanthum M. Y. He

大关杜鹃Rhododendron atrovirens Franch.

短鳞芽杜鹃Rhododendron breviperulatum Hayata

金萼杜鹃Rhododendron chrysocalyx H. Lév. & Vant.

金萼杜鹃（原变种）Rhododendron chrysocalyx H. Lév. & Vant. var. chrysocalyx

秀山金萼杜鹃（变种）Rhododendron chrysocalyx H. Lév. & Vant. var. xiushanense (Fang) M. Y. He

龙山杜鹃Rhododendron chunii Fang

棒柱杜鹃Rhododendron crassimedium P. C. Tam

粗柱杜鹃Rhododendron crassistylum M. Y. He

白枝杜鹃Rhododendron cretaceum P. C. Tam

龙岩杜鹃Rhododendron florulentum P. C. Tam

子花杜鹃Rhododendron flosculum Fang & G. Z. Li

河边杜鹃Rhododendron flumineum Fang & M. Y. He

贵定杜鹃Rhododendron fuchsiifolium H. Lév.

棕毛杜鹃Rhododendron fuscipilum M. Y. He

腺柱杜鹃Rhododendron glandulostylum Fang & M. Y. He

海南杜鹃Rhododendron hainanense Merr.

合江杜鹃Rhododendron hejiangense M. Y. He

湖南杜鹃Rhododendron hunanense Chun ex P. C. Tam

背绒杜鹃Rhododendron hypoblematosum P. C. Tam

皋月杜鹃Rhododendron indicum (L.) Sweet

素馨杜鹃Rhododendron jasminoides M. Y. He

金平杜鹃Rhododendron jinpingense Fang & M. Y. He

金秀杜鹃Rhododendron jinxiuense Fang & M. Y. He

台北杜鹃Rhododendron kanehirae E. H. Wils.

广西杜鹃Rhododendron kwangsiense Hu ex P. C. Tam

广西杜鹃〔原变种）Rhododendron kwangsiense Hu ex P. C. Tam var. kwangsiense

钝圆杜鹃（变种）Rhododendron kwangsiense Hu ex P. C. Tam var. obovatifolium P. C. Tam

广东杜鹃Rhododendron kwangtungense Merr. & Chun

毛花柱杜鹃Rhododendron lasiostylum Hayata

荔叶杜鹃Rhododendron litchiifolium T. C. Wu & P. C. Tam

长尖杜鹃Rhododendron longifalcatum P. C. Tam

长鳞芽杜鹃Rhododendron longiperulatum Hayata

忍冬杜鹃Rhododendron loniceriflorum P. C. Tam

麻栗坡杜鹃Rhododendron malipoense M. Y. He

岭南杜鹃Rhododendron mariae Hance

南边杜鹃Rhododendron meridionale P. C. Tam

南边杜鹃（原变种）Rhododendron meridionale P. C. Tam var. meridionale

狭叶南边杜鹃（变种）Rhododendron meridionale P. C. Tam var. minus P. C. Tam

糙柱杜鹃（变种）Rhododendron meridionale P. C. Tam var. setistylum P. C. Tam

亮毛杜鹃Rhododendron microphyton Franch.

亮毛杜鹃（原变种）Rhododendron microphyton Franch. var. microphyton

碧江亮毛杜鹃（变种）Rhododendron microphyton Franch. var. trichanthum A. L. Chang ex R. C. Fang

小花杜鹃Rhododendron minutiflorum Hu

白花杜鹃Rhododendron mucronatum (Bl.) G. Don

铁仔叶杜鹃Rhododendron myrsinifolium Ching ex Fang & M. Y. He

南昆杜鹃Rhododendron naamkwanense Merr.

紫薇春（变种）Rhododendron naamkwanense Merr. var. cryptonerve P. C. Tam

南昆杜鹃（原变种）Rhododendron naamkwanense Merr. var. naamkwanense

那克哈杜鹃Rhododendron nakaharae Hayata

南平杜鹃Rhododendron nanpingense P. C. Tam

钝叶杜鹃Rhododendron obtusum (Lindl.) Planch.

八蕊杜鹃Rhododendron octandrum M. Y. He

砖红杜鹃Rhododendron oldhamii Maxim.

千针叶杜鹃Rhododendron polyraphidoideum P. C. Tam

岭上杜鹃（变种）Rhododendron polyraphidoideum P. C. Tam var. montanum P. C. Tam

千针叶杜鹃（原变种）Rhododendron polyraphidoideum P. C. Tam var. polyraphidoideu

美艳杜鹃Rhododendron pulchroides Chun & Fang

锦绣杜鹃Rhododendron pulchrum Sweet

黔阳杜鹃Rhododendron qianyangense M. Y. He

淡红杜鹃Rhododendron rhodanthum M. Y. He

乳源杜鹃Rhododendron rhuyuenense Chun ex P. C. Tam

溪畔杜鹃Rhododendron rivulare Hand.-Mazz.

台红毛杜鹃Rhododendron rubropilosum Hayata

滇红毛杜鹃Rhododendron rufohirtum Hand.-Mazz.

茶绒杜鹃Rhododendron rufulum P. C. Tam

崖壁杜鹃Rhododendron saxatile B. Y. Ding & Y. Y. Fang

毛果杜鹃Rhododendron seniavinii Maxim.

杜鹃Rhododendron simsii Planch.

蔗黄杜鹃Rhododendron spadiceum P. C. Tam

川南杜鹃Rhododendron sparsifolium Fang

腊黄杜鹃Rhododendron subcerinum P. C. Tam

隐脉杜鹃Rhododendron subenerve P. C. Tam

涧上杜鹃Rhododendron subflumineum P. C. Tam

大埔杜鹃Rhododendron taipaoense T. C. Wu & P. C. Tam

细瘦杜鹃Rhododendron tenue Ching ex Fang & M. Y. He

薄片杜鹃Rhododendron tenuilaminare P. C. Tam

鼎湖杜鹃Rhododendron tingwuense P. C. Tam

两广杜鹃Rhododendron tsoi Merr.

垂钩杜鹃Rhododendron unciferum P. C. Tam

粘芽杜鹃Rhododendron viscigemmatum P. C. Tam

阳明山杜鹃Rhododendron yangmingshanense P. C. Tam

瑶山杜鹃Rhododendron yaoshanicum Fang & M. Y. He^[2]

本种与棒柱杜鹃R．Crassimedium Tam相近，但不同在于本种的花冠管内外两侧均被长柔毛或微柔毛，花丝、花柱被疏柔毛而相区别。^[3]

Rhododendron viscidum C．Z．Guo et Z．H．Liu in Act． Bot． Yunn． 10：497．1988．^[3]