Astilbe Buchanan-Hamilton ex D. Don. Astilbe, False Goat's-beard.
A genus of 14-25 species, perennial herbs, of e. Asia and e. North America.
ID notes: Superficially, Astilbe is quite similar to Aruncus (Rosaceae). Astilbe may be distinguished by the following characteristics: pubescence of the stem and lower leaf surface glandular, plants monoecious, carpels 2 per flower, stamens 10 per flower (vs. Aruncus: pubescence nonglandular, plants dioecious, carpels 3-4 per flower, stamens 15-20 per flower).
Ref: Mellichamp (2009a) In Flora of North America Editorial Committee (2009); Soltis In Kubitzki, Bayer, & Stevens (2007); Zhu et al. (2013). Show full citations.