https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:60454333-2

https://www.catalogueoflife.org/data/taxon/4SG4Z

http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200016492

"Kron (Edinburgh J. Bot. 50: 279. 1993) treated Rhododendron japonicum A. Gray as R. molle subsp. japonicum (A. Gray) Kron. This taxon differs from subsp. molle in its more densely hairy fruit and yellow to orange-red flowers. It is restricted to Japan."