The Collaborative International Dictionary of English v.0.48:
Allionia \Allionia\ n. 1. 1 a small genus of chiefly American herbs. Syn: genus Allionia. [WordNet 1.5]WordNet (r) 3.0 (2006):
Allionia n 1: small genus of chiefly American herbs [syn: Allionia, genus Allionia]