Table 2.

Morphological comparison between P. patens s.str. and P. uralensis.

Characters	P. patens s.str.	P. uralensis
Flower colour	Blue-violet (different saturation)	Yellow (white or light yellow)
Lobes of basal leaves	≤ 26 (17–30)	≥ 26 (22–43)
Width of leaf-lobes	0.3–0.6 cm	0.2–0.5 cm
Stalk of the central lobe of the basal leaves	Absent	0.7–1.2 cm / absent
Flowering time	Early May to early June	Early May to early June