Species in the genus Rhododendron:

Rhododendron japonicum / Rengetsutsuji
Rhododendron japonicum f. flavum / Kirengestutsuji
Rhododendron japonoheptamerum var. hondoense / Honshakunage
Rhododendron japonoheptamerum var. okiense / Okishakunage
Rhododendron kaempferi / Yamatsutsuji
Rhododendron lagopus / Daisennmitsubatsutsuji
Rhododendron reticulatum / Kobanomitsubatsutsuji
Rhododendron reticulatum f. albiflorum / Shirobanakobanomitsubatsutsuji
Rhododendron ripense / Kishitsutsuji
Rhododendron semibarbatum / Baikatsutsuji

Rhododendron lagopus / Daisennmitsubatsutsuji ダイセンミツバツツジ

Rhododendron lagopus, a deciduous tree, 1-4m in height, grows in forests and the edges in mountainous regions, the branches spreading sideways. Leaves are in a whorl of three, each blade being 5-8cm in length, 3-6cm in width, in a roundish diamond shape, with the tips pointed and broadly cuneate base, the margin having wavy serrations. The widest is in the middle part. Vivid red-purple flowers singly come out on branch tips before or at the same time when leaves develop. Corollas are 3.5-5cm across, funnel-shaped, and cut in five - there are dark dotes on the upper three lobes. Long white hairs grow on calyxes and peduncles. Significant hairs on the peduncles characterize this species. Bloom time: April-May.