Astilbe thunbergii, a
40-80cm tall perennial, occurs in bright forests or grasslands;
leaves are of a triternate compound leaf with brown scaly hairs on
petiole's bases and nodes. Leaflets, 4-10cm long, 2-5cm wide, with
tips sharply pointed in a tail way and double serrations on margins.
Inflorescences are broadly conical, with long lateral branches and
white flowers. Bloom time: June-July.