标题：羊毛杜鹃
形态特征
  中国植物志 原版墨线图[1]羊毛杜鹃[2]小枝粗壮，直径7-9毫米，密被黄锈色绒毛，老枝无毛。叶厚革质，坚硬，宽倒披针形至倒卵形，长7-14厘米，宽4-7.5厘米，先端圆或近截形，有小突尖头，基部钝，边缘反卷，上面暗深绿色，有粗糙的皱纹，除中脉有绒毛外其余无毛，下面红褐色，密被一层厚的单毛状绒毛，中脉在下面凸出、密被棕褐色绒毛，侧脉10-12对，在上面凹入较深，下面稍隆起，没入厚的毛被中；叶柄粗壮，长1.5-2.7厘米，被毛如小枝。顶生紧密的伞形花序，有花7-14朵；总轴长1-1.5厘米，密被绒毛；花梗长1-1.3厘米，密被锈色绒毛；花萼小，长1.8-3毫米，被锈色绒毛，裂片5，齿状三角形，长约1.1毫米；花冠管状钟形，长约4厘米，直径近4厘米，肉质，暗深红色，内面基部有5枚黑红色的密腺囊，裂片5，扁圆形，长1.5厘米，宽1厘米，有缺刻；雄蕊10，不等长，长2.2-3.2厘米，花丝无毛，基部深红色，花药长椭圆形，紫黑色，长1.5-2.5毫米；子房近于卵圆形，长7毫米，顶端截形，密被锈色羊毛状绒毛，花柱长2.3厘米，无毛，柱头小，点状。蒴果圆柱形，斜生果梗上，长1-2厘米，直径5-6毫米，微弯曲，有浅肋纹及褐色绒毛。 [3]
相关的种
亮红杜鹃Rhododendron albertsenianum Forrest 
宿鳞杜鹃Rhododendron aperantum Balf.f. & Kingdon-Ward 
刺枝杜鹃Rhododendron beanianum Cowan 
碧江杜鹃Rhododendron bijiangense Ming 
瓣萼杜鹃Rhododendron catacosmum Balf.f. ex Tagg 
云雾杜鹃Rhododendron chamaethomsonii (Tagg) Cowan & Davidian 
毛背云雾杜鹃（变种）Rhododendron chamaethomsonii (Tagg) Cowan & Davidian var. chamaedoron (Tagg & Forrest) D. F. Chamb. 
短萼云雾杜鹃（变种）Rhododendron chamaethomsonii (Tagg) Cowan & Davidian var. chamaethauma (Tagg) Cowan & Davidian 
云雾杜鹃（原变种）Rhododendron chamaethomsonii (Tagg) Cowan & Davidian var. chamaethomsonii 
高山白花杜鹃Rhododendron chionanthum Tagg & Forrest 
橙黄杜鹃Rhododendron citriniflorum Balf.f. & Forrest 
橙黄杜鹃（原变种）Rhododendron citriniflorum Balf.f. & Forrest var. citriniflorum 
美艳橙黄杜鹃（变种）Rhododendron citriniflorum Balf.f. & Forrest var. horaeum (Balf.f. & Forrest) D. F. Chamb. 
滇缅杜鹃Rhododendron coelicum Balf.f. & Farrer 
两色杜鹃Rhododendron dichroanthum Diels 
匍匐杜鹃Rhododendron erastum Balf.f. & Forrest 
滇西杜鹃Rhododendron euchroum Balf.f. & Kingdon-Ward 
华丽杜鹃Rhododendron eudoxum Balf.f. & Forrest 
褐叶华丽杜鹃（变种）Rhododendron eudoxum Balf.f. & Forrest var. brunneifolium (Balf.f. & Forrest) D. F. Chamb. 
华丽杜鹃（原变种）Rhododendron eudoxum Balf.f. & Forrest var. eudoxum 
白毛华丽杜鹃（变种）Rhododendron eudoxum Balf.f. & Forrest var. mesopolium (Balf.f. & Forrest) D. F. Chamb. 
绵毛杜鹃Rhododendron floccigerum Franch. 
紫背杜鹃Rhododendron forrestii Balf.f. ex Diels 
紫背杜鹃（原亚种）Rhododendron forrestii Balf.f. ex Diels subsp. forrestii 
乳突紫背杜鹃（亚种）Rhododendron forrestii Balf.f. ex Diels subsp. papillatum D. F. Chamb. 
似血杜鹃Rhododendron haematodes Franch. 
绢毛杜鹃（亚种）Rhododendron haematodes Franch. subsp. chaetomallum (Balf.f. & Forrest) D. F. Chamb. 
似血杜鹃（原亚种）Rhododendron haematodes Franch. subsp. haematodes 
短蕊杜鹃Rhododendron microgynum Balf.f. & Forrest 
火红杜鹃Rhododendron neriiflorum Franch. 
盘萼杜鹃Rhododendron parmulatum Cowan 
察隅杜鹃Rhododendron piercei Davidian 
杯萼杜鹃Rhododendron pocophorum Balf.f. ex Tagg 
腺柄杯萼杜鹃（变种）Rhododendron pocophorum Balf.f. ex Tagg var. hemidartum (Balf.f. ex Tagg) D. F. Chamb. 
杯萼杜鹃（原变种）Rhododendron pocophorum Balf.f. ex Tagg var. pocophorum 
血红杜鹃Rhododendron sanguineum Franch. 
纯红杜鹃Rhododendron sperabile Balf.f. & Farrer 
纯红杜鹃（原变种）Rhododendron sperabile Balf.f. & Farrer var. sperabile 
维西纯红杜鹃（变种）Rhododendron sperabile Balf.f. & Farrer var. weihsiense Tagg & Forrest 
糠秕杜鹃Rhododendron sperabiloides Tagg & Forrest 
滇藏杜鹃Rhododendron temenium Balf.f. & Forrest 
粉红滇藏杜鹃（变种）Rhododendron temenium Balf.f. & Forrest var. dealbatum (Cowan) D. F. Chamb. 
黄花滇藏杜鹃（变种）Rhododendron temenium Balf.f. & Forrest var. gilvum (Cowan) D. F. Chamb. 
滇藏杜鹃（原变种）Rhododendron temenium Balf.f. & Forrest var. temenium 
朗贡杜鹃Rhododendron trilectorum Cowan [4]
参考文献
Rhododendron mallotum Balf. f. et K. Ward in Not. Bot. Gard. Edinb. 10: 118. 1917; Tagg in Stevenson, Spec. Rhodod. 525. 1930; Hutch. in Curtis's Bot. Mag. 158: t. 9419. 1935;中国高等植物图鉴3: 94. 图4142. 1974; Cullen et Chamb. in Not. Bot. Gard. Edinb. 37: 333. 1979; Chamb. in Not. Bot. Gard. Edinb. 39: 386. 198?; 云南植物志4: 434. 1986. ——R. aemulorum Balf. f. in Not. Bot. Gard. Edinb. 12: 86. 1920.[4]