Japan Flora: elongate, linear-lanceolate to lanceolate, ciliate calyx-segments 1-6 mm. long; anthers 2-3 mm. long; styles 7-10 mm. long; corolla subcampanulate, usually purplish, the umbels with a short axis 1-6 mm. long. Mountains and hills.
Hokkaido, Honshu, Shikoku; variable and rather common northwest