The Collaborative International Dictionary of English v.0.48:
Machaeranthera \Machaeranthera\ n. A genus of wildflowers of Western North America. Syn: genus Machaeranthera. [WordNet 1.5] MachaerodusWordNet (r) 3.0 (2006):
Machaeranthera n 1: wildflowers of western North America [syn: Machaeranthera, genus Machaeranthera]