Hylomecon vernalis
Name: means wood poppy.
English: Forest poppy.
Region: Manchuria to Japan.
Botany: perennial herb; rhizomes, typically no taller than 30 cm; leaves pinnate, ± 5 soft green leaflets,lanceolate-oblong to rhombic, distinct teeth along the margins; flowers bright yellow, ± 4 cm across, bowl-shaped, then flattening out with age; habitat moist shaded woodland, accumulated humus