The Collaborative International Dictionary of English v.0.48:
Jamesonia \Jamesonia\ prop. n. A genus of xerophytic ferns of South America. Syn: genus Jamesonia. [WordNet 1.5]WordNet (r) 3.0 (2006):
Jamesonia n 1: xerophytic ferns of South America [syn: Jamesonia, genus Jamesonia]