# Rhododendron subsect. Tsutsusi

Rhododendron subsection Tsutsusi is a subsection of the genus Rhododendron, in section Tsutsusi, subgenus Azaleastrum, consisting of 66 species of Azaleas.

## Description

Leaves generally deciduous but some apical leaves over winter and are dimorphic, young twigs with flattened multicellular hairs that are widely distributed.

## Taxonomy

For etymology, see section Tsutsusi.

### Species

Species include;
| Image | Name | Distribution |
| | Rhododendron adenanthum M.Y.He 1984 | China (Guangxi) |
| | Rhododendron adenobracteum X.F.Gao & Y.L.Peng 2004 | China (Sichuan) |
| | Rhododendron arunachalense D.F.Chamb. & Rae 1990 | India (Arunachal Pradesh ) |
| | Rhododendron boninense Nakai 1920 | Japan ( Ogasawara-shoto) |
| | Rhododendron breviperulatum Hayata 1913 | Taiwan |
| | Rhododendron chaoanense D.C.Wu & P.C.Tam 1978 | China (Guangdong) |
| | Rhododendron chrysocalyx H.Lév. & Vaniot 1906 | China (Hubei, Guizhou, Guangxi) |
| | Rhododendron chunii W.P.Fang 1984 | China (Guangdong, Guangxi), Vietnam |
| | Rhododendron crassimedium P.C.Tam 1982 | China (Jiangxi) |
| | Rhododendron crassistylum M.Y.He 1987 | China (Jiangxi) |
| | Rhododendron cretaceum P.C.Tam 1983 | China (Guangdong) |
| | Rhododendron eriocarpum (Hayata) Nakai 1922 | Japan (Kyushu) to Nansei-shoto (Uotsuri-Jima) |
| | Rhododendron flosculum W.P.Fang & G.Z.Li 1984 | China (Guangxi) |
| | Rhododendron flumineum W.P.Fang & M.Y.He 1982 | China (Yunnan) |
| | Rhododendron fuchsiifolium H.Lév. 1914 | China (Guizhou, Guangxi, Guangdong) |
| | Rhododendron fuscipilum M.Y.He 1984 | China (Guangxi) |
| | Rhododendron guizhongense G.Z.Li 1995 | China (Guangxi) |
| | Rhododendron hainanense Merr. 1922 | China (Guangxi), Vietnam |
| | Rhododendron hunanense Chun & P.C.Tam 1982 | China (E. Jiangxi, S. Hunan) |
| | Rhododendron indicum (L.) Sweet 1830 | Japan (W. & Central Honshu, Kyushu) |
| | Rhododendron jasminoides M.Y.He 1984 | China (Guangxi) |
| | Rhododendron jinpingense W.P.Fang & M.Y.He 1982 | China (Yunnan) |
| | Rhododendron jinxiuense W.P.Fang & M.Y.He 1982 | China (Guangxi) |
| | Rhododendron kaempferi Planch. 1853 | Japan |
| | Rhododendron kanehirae E.H.Wilson 1921 | Taiwan |
| | Rhododendron kiusianum Makino 1914 | Japan (Kyushu) |
| | Rhododendron komiyamae Makino 1925 | Japan (Shizuoka) |
| | Rhododendron kwangsiense Hu ex P.C.Tam 1983 | China (Guangxi, Guangdong, Hunan, Guizhou) |
| | Rhododendron kwangtungense Merr. & Chun 1930 | China (Guangxi, Guangdong, Hunan, Guizhou) |
| | Rhododendron lasiostylum Hayata 1913 | Taiwan |
| | Rhododendron lilacinum Xiang Chen & X.Chen 2010 | China (Guizhou) |
| | Rhododendron linguiense G.Z.Li 1995 | China (Guangxi). |
| | Rhododendron litchiifolium T.C.Wu & P.C.Tam 1978 | China (Guangdong). |
| | Rhododendron longifalcatum P.C.Tam 1982 | China (Guangxi) |
| | Rhododendron longiperulatum Hayata 1913 | Taiwan |
| | Rhododendron loniceriflorum P.C.Tam 1982 | China (Fujian) |
| | Rhododendron malipoense M.Y.He 1984 | China (Yunnan) |
| | Rhododendron mariae Hance 1882 | China (Guizhou) |
| | Rhododendron meridionale P.C.Tam 1982 | China (Guangxi), Vietnam |
| | Rhododendron microphyton Franch. 1886 | China (Guangxi), Myanmar, Thailand |
| | Rhododendron minutiflorum Hu 1931 | China (Guangxi, Guangdong) |
| | Rhododendron mucronatum (Blume) G.Don 1834 | Japan |
| | Rhododendron myrsinifolium Ching ex W.P.Fang & M.Y.He 1982 | China (Guangxi) |
| | Rhododendron naamkwanense Merr. 1934 | China (Guangdong, Jiangxi) |
| | Rhododendron nakaharae Hayata 1908 | northern Taiwan |
| | Rhododendron nanpingense P.C.Tam 1982 | China (Fujian) |
| | Rhododendron nipponicum Mastsum. 1899 | Japan (Honshu) |
| | Rhododendron noriakianum T.Suzuki 1935 | Taiwan |
| | Rhododendron octandrum M.Y.He 1987 | China (Guizhou) |
| | Rhododendron oldhamii Maxim. 1871 | Taiwan |
| | Rhododendron pinetorum P.C.Tam 1982 | China (Hunan) |
| | Rhododendron pudingense X.Y.Dai, C.H.Yang & Y.P.Ma 2020 | China (Guizhou) |
| | Rhododendron pulchroides Chun & W.P.Fang 1957 | China (Guangxi) |
| | Rhododendron qianyangense M.Y.He 1985 | China (Hunan) |
| | Rhododendron rhodanthum M.Y.He 1985 | China (Hunan) |
| | Rhododendron rhuyuenense Chun ex P.C.Tam 1983 | China (Hunan, Guangdong, Jiangxi) |
| | Rhododendron ripense Makino 1908 | Japan |
| | Rhododendron rivulare Hand.-Mazz. 1921 | China, N. Myanmar |
| | Rhododendron rubropilosum Hayata 1911 | Central Taiwan |
| | Rhododendron rufohirtum Hand.-Mazz. 1921 | China (Sichuan, Yunnan, Guizhou) |
| | Rhododendron saxatile B.Y.Ding & Y.Y.Fang 1987 | China (Zhejiang) |
| | Rhododendron saxicola Sleumer 1958 | Vietnam |
| | Rhododendron scabrum G.Don 1834 | Nansei-shoto |
| | Rhododendron seniavinii Maxim. 1871 | China (Guizhou, Hunan, Jiangxi, Fujian) |
| | Rhododendron serpyllifolium (A.Gray) Miq. 1866 | Japan(Honshu, Kyushu, and Shikoku,) |
| | Rhododendron sikayotaizanense Masam. 1939 | Taiwan |
| | Rhododendron simsii Planch. 1853 | China, Laos, Myanmar, Nansei-shoto, Taiwan, Thailand, Tibet, Vietnam |
| | Rhododendron sohayakiense Y.Watan & T.Yukawa 2019 | Japan (Honshu, Shikoku) |
| | Rhododendron sparsifolium W.P.Fang 1983 | China (Sichuan) |
| | Rhododendron stenopetalum (R.Hogg) Mabb. 1990 | Japan |
| | Rhododendron strigosum R.L.Liu 2001 | China (Jiangxi) |
| | Rhododendron subcerinum P.C.Tam 1982 | China (Guangdong) |
| | Rhododendron subenerve P.C.Tam 1983 | China (Guangxi) |
| | Rhododendron subflumineum P.C.Tam 1982 | China (Hunan, Guangdong) |
| | Rhododendron subsessile Rendle 1896 | Philippines. |
| | Rhododendron taipaoense T.C.Wu & P.C.Tam 1978 | China (Guangdong, Fujian). |
| | Rhododendron taiwanalpinum Ohwi 1937 | Taiwan |
| ] | Rhododendron tashiroi Maxim. 1886 | Japan, Taiwan |
| | Rhododendron tenuilaminare P.C.Tam 1983 | China (Guangdong) |
| | Rhododendron tingwuense P.C.Tam 1978 | China (Guangdong) |
| | Rhododendron tosaense Makino 1892 | Japan (SW. Honshu, S. Shikoku, E. Kyushu) |
| | Rhododendron tschonoskii Maxim. 1870 | Japan, Kuril Is., Sakhalin |
| | Rhododendron tsusiophyllum Sugim. 1956 | Japan |
| | Rhododendron unciferum P.C.Tam 1982 | China (Guangxi) |
| | Rhododendron viscidum C.Z.Guo & Z.H.Liu 1988 | China (Hunan) |
| | Rhododendron xiangganense X.F.Jin & B.Y.Ding 2009 | China (Jiangxi, Hunan) |
| | Rhododendron yakuinsulare Masam. 1930 | Japan (Yakushima) |
| | Rhododendron yangmingshanense P.C.Tam 1982 | China (Hunan) |
| | Rhododendron yaoshanicum W.P.Fang & M.Y.He 1983 | China (Guangxi) |
| | Rhododendron yedoense Maxim. ex Regel 1886 | China (Yunnan) to N. Myanmar, Korea, S. Japan |
| | Rhododendron yunyianum X.F.Jin & B.Y.Ding 2009 | China (Fujian) |