* Sepals covered outside with silky hairs.

A. Pulsatilla: flowers large, solitary, violet-purple, with the involucre deeply cut into linear segments; carpels with feathery tails. - Pasque-flower. - Limestone pastures. Fl. April, May.

** Sepals smooth on both sides.

A. nemorosa: flowers small, solitary, white tinged with red outside; the involucre of stalked leaves, with the leaflets lobed and cut; carpels downy with a point not feathery. - Wood Anemone. - Woods and thickets. Fl. April.