For the other species, find a link below the page.
Viola
mandshurica var. crassa / Anamasumire アナマスミレ
Viola mandshurica var. crassais a coastal type variety of Viola mandshurica, inhabiting sandy
soil on seashores. Leaves are thick and glossy, curling
themselves as if to make boats or pipes. Bloom time: April-May.