Paul Smither’s Yatsugatake and Southern Alps Mountain plants Field guide – 1 (P19)

Geranium soboliferum

Unlike many geraniums which flower in early summer, this geranium bears bright pink flowers from August to October. The deeply divided bright green leaves gradually take on red tones ensuring a vibrant display deep into autumn.
You may see clumps of this geranium in damp alpine meadows.