Ranunculus acris Linnaeus subsp. japonicus (Thunberg) Hultén; R. acris var. japonicus (Thunberg) Maximowicz; R. acris var. schizophyllus H. Léveillé; R. japonicus f. latissimus (Kitagawa) Kitagawa; R. japonicus var. latissimus Kitagawa; R. labordei H. Léveillé.

Stems toward base and petioles hispid. Basal leaf blade 3-partite, rarely 3-sect. Upper stem leaves not silvery strigose. Fl. Apr--Aug.

Grassy slopes, meadows, by streams, forests; 100--3500 m. Anhui, Fujian, Gansu, N Guangdong, N Guangxi, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Jilin, Liaoning, Nei Mongol, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Yunnan, Zhejiang [Japan, Russia (Far East)].