Rhododendron sect. Sciadorhodion

Rhododendron sect. Sciadorhodion is a subsection of subgenus Azaleastrum in the genus Rhododendron. It comprises 16 species of deciduous shrubss native to East Asia and North America.^[1][2]

Rhododendron sect. Sciadorhodion
Rhododendron wadanum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Ericales
Family:	Ericaceae
Genus:	Rhododendron
Subgenus:	Rhododendron subg. Azaleastrum
Section:	Rhododendron sect. Sciadorhodion Rehder & E.H.Wilson
Type species
Rhododendron schlippenbachii
Species
See text
Synonyms
Menziesia Sm. 1791 Rhododendron sect. Azaleastrum Planch. ex Maxim., 1870 Azaleastrum (Planch. ex Maxim.) Rydb. 1900 Rhododendron sect. Candidastrum Sleumer 1949 Rhododendron subg. Candidastrum (Sleumer) M.N.Philipson & Philipson. 1982 Rhododendron ser. Dilatata T.Yamaz. 1993 Rhododendron ser. Glangulistyla T.Yamaz. 1993 Rhododendron sect. Quinquefolia T.Yamaz. 1993 Rhododendron sect. Schlippenbachia T.Yamaz., 1996

Taxonomy

Plants were previously classified in the genus Menziesia and reclassified within the genus Rhododendron^[3] and formally transferred in 2011.^[4]

Species

Image	Name	Distribution
	Rhododendron albiflorum Hook. 1834	British Columbia to northern Oregon and inland to western Alberta to Montana, and Colorado
	Rhododendron albrechtii Maxim. 1870	Japan (Honshu and Hokkaido)
	Rhododendron benhallii Craven 2011	Japan (Honshu, Shikoku)
	Rhododendron dilatatum Miq. 1836	Japan (Honshu).
	Rhododendron goyozanense (M.Kikuchi) Craven 2011	Japan (N. Honshu)
	Rhododendron katsumatae (M.Tash. & H.Hatta) Craven 2011	Japan (Honshu)
	Rhododendron kroniae Craven 2011	Japan (Kyushu)
	Rhododendron menziesii Craven 2011	Alaska through the Pacific Northwest to northwestern California and Wyoming
	Rhododendron multiflorum (Maxim.) Craven 2011	Japan (S. Hokkaido, N. & Central Honshu)
	Rhododendron osuzuyamense T.Yamaz. 2019	Japan (C. Kyushu).
	Rhododendron pentandrum (Maxim.) Craven 2011	Sakhalin to Japan
	Rhododendron pilosum (Maxim.) Craven 2011	United States (S. Pennsylvania to Georgia)
	Rhododendron quinquefolium Bisset & S.Moore 1877	Japan (C. Honshu, Shikoku)
	Rhododendron schlippenbachii Maxim. 1870	S. Russian, Korea, China (Inner Mongolia, Manchuria) and Japan
	Rhododendron vaseyi A.Gray 1880	North Carolina
	Rhododendron wadanum Makino 1917	Japan (C. Honshu)
	Rhododendron yakushimense (M.Tash. & H.Hatta) Craven 2011	Japan (Yakushima)

References

1. "Rhododendron sect. Sciadorhodion in Flora of China @ efloras.org". eFloras.org Home. Retrieved 2025-01-27.
2. Xia, Xiao-Mei; Yang, Miao-Qin; Li, Cong-Li; Huang, Si-Xin; Jin, Wei-Tao; Shen, Ting-Ting; Wang, Fei; Li, Xiao-Hua; Yoichi, Watanabe; Zhang, Le-Hua; Zheng, Yuan-Run; Wang, Xiao-Quan (2022-01-07). "Spatiotemporal Evolution of the Global Species Diversity of Rhododendron". Molecular Biology and Evolution. 39 (1). doi:10.1093/molbev/msab314. ISSN 0737-4038. PMC 8760938. PMID 34718707.
3. Goetsch, Loretta A.; Eckert, Andrew J.; Hall, Benjamin D. (July–September 2005). "The molecular systematics of Rhododendron (Ericaceae): a phylogeny based upon RPB2 gene sequences". Systematic Botany. 30 (3): 616–626. doi:10.1600/0363644054782170. S2CID 51949019.
4. Craven, L.A. Diplarche and Menziesia transferred to Rhododendron (Ericaceae). Blumea 56 (1), April 2011, pp. 33-35(3)

• Pink, A. (2004). Gardening for the Million. Project Gutenberg Literary Archive Foundation.
• Cox, Kenneth (2016). "Rhododendrons formerly known as Menziesia". The Plantsman. New Series. 15 (1): 52–57.