标题：毡毛栎叶杜鹃
基本简介
本变种与栎叶杜鹃的区别在于叶较小，长圆椭圆形至披针形，长5—9厘米，宽2—3.5 厘米，下面密被黄棕色至肉桂色毡毛状毛被，不黏结，花小，花冠长2—3厘米，有时子房疏被短柔毛。
基本资料
【种中文名】：毡毛栎叶杜鹃(变种) 
【种拉丁名】：Rhododendron phaeochrysum Balf．F. et W．W.Smith var．Levistratum 
【亚组中文名】：大理杜鹃亚组
【亚组拉丁名】：Subsect．Taliensia Sleumer 
【组中文名】：常绿杜鹃组
【组拉丁名】：Sect．Ponticum G．Don 
【亚属中文名】：常绿杜鹃亚属
【亚属拉丁名】：Subgen．Hymenanthes (Blume) K．Koch 
【属中文名】：杜鹃属
【属拉丁名】：Rhododendron 
【亚科中文名】：杜鹃花亚科
【亚科拉丁名】：RHODODENDROIDEAE Drude 
【科中文名】：杜鹃花科
【科拉丁名】：ERICAEAE 
【纲中文名】：双子叶植物纲
【纲拉丁名】：DICOTYLEDONEAE 
【门中文名】：被子植物门
【门拉丁名】：ANGIOSPERMAE
形态特征
本变种与原变种的区别是叶较小， 披针形或长圆状椭圆形，长5—9厘米，宽2--3．5 厘米，下面密被黄棕色或肉桂色毡毛状毛被，不粘结，花亦较小，花冠长2—3厘米，有 时子房疏被短柔毛。 花期5—6月，果期9月[1]
产地分布
产四川西南部、 西部和西北部、云南西北部。生于海拔3 000—4 450米的高山冷杉下 或杜鹃灌丛中。模式标本采自云南德饮。[1]
参考文献
Rhododendron phaeochrysum Balf. f. et W. W. Smith var. levistratum (Balf. f. et Forrest) Chamb. ex Cullen et Chamb. in Not. Bot. Gard. Edinb. 36: 120. 1978; Chamb. in Not. Bot. Gard. Edinb. 39: 352. 1982; 云南植物志4: 415. 1986: 中国四川杜鹃花160-161. 1986.——R. Levistratum Balf. f. et Forrest in Not. Bot. Gard. Edinb. 11: 88. 1919; Tagg in Stevenson, Spec. Rhodod. 382. 1930. ——R. dichropeplum Balf. f. et Forrest in ibid. 13: 40. 1920; Tagg in ibid. 680. 1930. ——R. theiophyllum Balf. f. et Forrest in Eibid. 13: 61. 1920; Tagg in ibid. 385. 1930. ——R. aiolopeplum Balf. f. et Forrest in ibid. 13: 226. 1922; Tagg in ibid. 373. 1930. ——R. helvolum Balf. f. et Forrest in ibid. 13: 262. 1922; Tagg in ibid. 382. 1930.——R. intortum Balf. f. et Forrest in ibid. 13: 269. 1922; Tagg in ibid. 384. 1930.——R. sigilatum Balf. f. et Forrest in ibid. 13: 294. 1922; Tagg in ibid. 384. 1930.——R. vicinum Balf. f. et Forrest in ibid. 13: 305. 1922; Tagg in ibid. 382. 1930. [1]
相关种
腺房杜鹃Rhododendron adenogynum Diels 
雪山杜鹃Rhododendron aganniphum Balf.f. & Kingdon-Ward 
雪山杜鹃（原变种）Rhododendron aganniphum Balf.f. & Kingdon-Ward var. aganniphum 
黄毛雪山杜鹃（变种）Rhododendron aganniphum Balf.f. & Kingdon-Ward var. flavorufum (Balf.f. & Forrest) D. F. Chamb. 
裂毛雪山杜鹃（变种）Rhododendron aganniphum Balf.f. & Kingdon-Ward var. schizopeplum (Balf.f. & Forrest) Ming 
棕背杜鹃Rhododendron alutaceum Balf.f. & W. W. Sm. 
棕背杜鹃（原变种）Rhododendron alutaceum Balf.f. & W. W. Sm. var. alutaceum 
毛枝棕背杜鹃（变种）Rhododendron alutaceum Balf.f. & W. W. Sm. var. iodes (Balf.f. & Forrest) D. F. Chamb. 
腺房棕背杜鹃（变种）Rhododendron alutaceum Balf.f. & W. W. Sm. var. russotinctum (Balf.f. & Forrest) D. F. Chamb. 
巴朗杜鹃Rhododendron balangense Fang 
粉钟杜鹃Rhododendron balfourianum Diels 
白毛粉钟杜鹃（变种）Rhododendron balfourianum Diels var. aganniphoides Tagg & Forrest 
粉钟杜鹃（原变种）Rhododendron balfourianum Diels var. balfourianum 
马尔康杜鹃Rhododendron barkamense D. F. Chamb. 
多叶杜鹃Rhododendron bathyphyllum Balf.f. & Forrest 
宽钟杜鹃Rhododendron beesianum Diels 
锈红杜鹃Rhododendron bureavii Franch. 
麻点杜鹃Rhododendron clementinae Forrest 
金背杜鹃（亚种）Rhododendron clementinae Forrest subsp. aureodorsale Fang 
麻点杜鹃（原亚种）Rhododendron clementinae Forrest subsp. clementinae 
腺蕊杜鹃Rhododendron codonanthum Balf.f. & Forrest 
粗脉杜鹃Rhododendron coeloneurum Diels 
砾石杜鹃Rhododendron comisteum Balf.f. & Forrest 
丹巴杜鹃Rhododendron danbaense L. C. Hu 
干净杜鹃Rhododendron detersile Franch. 
落毛杜鹃Rhododendron detonsum Balf.f. & Forrest 
疏毛杜鹃Rhododendron dignabile Cowan 
灌丛杜鹃Rhododendron dumicola Tagg & Forrest 
金江杜鹃Rhododendron elegantulum Tagg & Forrest 
金顶杜鹃Rhododendron faberi Hemsl. 
金顶杜鹃（原亚种）Rhododendron faberi Hemsl. subsp. faberi 
大叶金顶杜鹃（亚种）Rhododendron faberi Hemsl. subsp. prattii (Franch.) D. F. Chamb. 
短尖杜鹃Rhododendron inopinum Balf.f. 
乳黄杜鹃Rhododendron lacteum Franch. 
鲁浪杜鹃Rhododendron lulangense L. C. Hu & Tateishi 
鲁浪杜鹃Rhododendron lulangense L. C. Hu et Y. Tateishi 
优异杜鹃Rhododendron mimetes Tagg & Forrest 
山地杜鹃Rhododendron montiganum Ming 
德钦杜鹃Rhododendron nakotiltum Balf.f. & Forrest 
大炮山杜鹃Rhododendron nigroglandulosum Nitz. 
奇异杜鹃Rhododendron paradoxum Balf.f. 
栎叶杜鹃 (原变种)Rhododendron phaeochrysum Balf. f. et W. W. Smith var. phaeochrysum 
栎叶杜鹃Rhododendron phaeochrysum Balf.f. & W. W. Sm. 
凝毛杜鹃（变种）Rhododendron phaeochrysum Balf.f. & W. W. Sm. var. agglutinatum (Balf.f. & Forrest) D. F. Chamb. 
栎叶杜鹃（原变种）Rhododendron phaeochrysum Balf.f. & W. W. Sm. var. phaeochrysum 
波密杜鹃Rhododendron pomense Cowan & Davidian 
甘肃杜鹃Rhododendron potaninii Batal. 
藏南杜鹃Rhododendron principis Bur. & Franch. 
平卧杜鹃Rhododendron pronum Tagg & Forrest 
矮生杜鹃Rhododendron proteoides Balf.f. & W. W. Sm. 
陇蜀杜鹃Rhododendron przewalskii Maxim. 
毛脉杜鹃Rhododendron pubicostatum Ming 
普格杜鹃Rhododendron pugeense L. C. Hu 
斑叶杜鹃Rhododendron punctifolium L. C. Hu 
太白杜鹃Rhododendron purdomii Rehd. & E. H. Wils. 
卷叶杜鹃Rhododendron roxieanum Forrest 
兜尖卷叶杜鹃（变种）Rhododendron roxieanum Forrest var. cucullatum (Hand.-Mazz.) D. F. Chamb. 
线形卷叶杜鹃（变种）Rhododendron roxieanum Forrest var. oreonastes (Balf.f. & Forrest) Ming 
卷叶杜鹃（原变种）Rhododendron roxieanum Forrest var. roxieanum 
巫山杜鹃Rhododendron roxieoides D. F. Chamb. 
黄毛杜鹃Rhododendron rufum Batal. 
都支杜鹃Rhododendron shanii Fang 
裂毛杜鹃Rhododendron simulans (Tagg & Forrest) D. F. Chamb. 
宽叶杜鹃Rhododendron sphaeroblastum Balf.f. & Forrest 
宽叶杜鹃（原变种）Rhododendron sphaeroblastum Balf.f. & Forrest var. sphaeroblastum 
乌蒙宽叶杜鹃（变种）Rhododendron sphaeroblastum Balf.f. & Forrest var. wumengense Feng 
大理杜鹃Rhododendron taliense Franch. 
曲枝杜鹃Rhododendron torquatum L. C. Hu 
川滇杜鹃Rhododendron traillianum Forrest & W. W. Sm. 
棕背川滇杜鹃（变种）Rhododendron traillianum Forrest & W. W. Sm. var. dictyotum (Balf.f. ex Tagg) D. F. Chamb. 
川滇杜鹃（原变种）Rhododendron traillianum Forrest & W. W. Sm. var. traillianum 
理县杜鹃Rhododendron trichogynum L. C. Hu 
白毛杜鹃Rhododendron vellereum Hutch. ex Tagg 
褐毛杜鹃Rhododendron wasonii Hemsl. & E. H. Wils. 
褐毛杜鹃（原变种）Rhododendron wasonii Hemsl. & E. H. Wils. var. wasonii 
汶川褐色杜鹃（变种）Rhododendron wasonii Hemsl. & E. H. Wils. var. wenchuanense L. C. Hu 
宏钟杜鹃Rhododendron wightii Hook.f. 
皱皮杜鹃Rhododendron wiltonii Hemsl. & E. H. Wils. 
中甸杜鹃Rhododendron zhongdianense L. C. Hu [1]