The difference between water shield flower and water shield flower

(1) Water shield flower: diameter1-2cm, deep purple; Pedicel length 6- 10 cm; Sepals and petals are strip-shaped, with a length of 1- 1.5 cm and a blunt tip. Anthers are long, about 4 mm long; Carpels, puberulent. As shown in the figure:

(2) Water shepherd's purse flower: The flower is large and obvious, and it is the largest flower-shaped species in the genus Water shepherd's purse. The diameter is about 2.5 cm long, the corolla is yellow, with five lobes and whisker-like edges. There are obvious wrinkles in the middle of the corolla lobes, hairs on both sides of the lobes, a tuft of hairs at the base of the lobes and five glands. Five stamens, inserted between lobes, pistil stigma dichotomous. As shown in the figure below: