1a. Hylomecon japonica var. japonica
荷青花(原变种) he qing hua (yuan bian zhong)
Chelidonium japonicum Thunberg in Murray, Syst. Veg., ed. 14, 489. 1784; Hylomecon vernalis Maximowicz; Stylophorum japonicum (Murray) Miquel.
Basal leaf lobes 2 or 3 pairs, margin irregularly crenate or biserrate.
Forest understories, forest margins, ditch sides; 300-1800(-2400) m. Anhui, Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Jilin, Liaoning, Shaanxi, Shandong, Shanxi, NE Sichuan, Zhejiang [Japan, Korea, Russia (E Siberia)].
The following variants have been recognized, but one of us (Grey-Wilson) notes that they do not appear to be of great significance and numerous intermediates can be found in the wild.