Ooyama azalea - Ooyama azalea

Japanese: オオヤマツツジ - おおやまつつじ

...Mountain azaleas have medium-sized or small flowers, and the shape of the spring and autumn leaves is often different. The corolla is soft and has a slightly wrinkled edge. Seven species grow wild in Japan: Mountain azalea R. obtusum (Lindl.) Planch.var. kaempferi (Pl.) Wils. (illustration), Ooyama azalea R. transiens Nakai (illustration), Fuji azalea R. tosaense Makino, Ashitaka azalea R. komiyamae Makino, Miyamakirishima R. kiusianum Makino, Unzen azalea R. serpyllifolium (A.Gray) Miq., and Taiwan mountain azalea R. simsii Planch. The flowers of the Satsuki species are medium-sized, and the shape of the spring and autumn leaves is not very different. The corolla is somewhat thick and flat, and the edge is not very wavy. ...

*Some of the terminology that refers to "Ooyamatsutsuji" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ヤマツツジ類は花は中型か小型，春葉と秋葉で形が異なるものが多く，花冠は質が柔らかで縁にややしわがある。日本にはヤマツツジR.obtusum (Lindl.) Planch.var.kaempferi (Pl.) Wils.（イラスト），オオヤマツツジR.transiens Nakai（イラスト），フジツツジR.tosaense Makino，アシタカツツジR.komiyamae Makino，ミヤマキリシマR.kiusianum Makino，ウンゼンツツジR.serpyllifolium (A.Gray) Miq.，タイワンヤマツツジR.simsii Planch.の7種が野生する。サツキ類は花は中型で，春葉と秋葉の形はあまり異ならず，花冠は質やや厚く平板状で，縁はあまり波をうたない。…