Taraxacum Cass. (タンポポ)

Kumomatampopo (クモマタンポポ, 雲間蒲公英), horned dandelion

Lifeform: perennial forb < 20 cm high
Distribution: between Siberia and North America, including Japan (alpine zones in Hokkaido Island)
Habitat: rather moist places, often in distur bed areas in case of the boreal regions in the North America (Trelawny 1988)

Synonyms (controversial)

Taraxacum chamissonis Greene
Taraxacum sachalinense Kitam.
Taraxacum trigonolobum Dahlst.
Taraxacum yesoalpinum Nakai ex H.Koidz.
Taraxacum officinale Weber ssp. ceratophorum (Ledeb.) Schinz ex Thellung