The Collaborative International Dictionary of English v.0.48:
Carnegiea \Carnegiea\ n. a genus of plants consisting of one species, the saguaro. Syn: genus Carnegiea. [WordNet 1.5]WordNet (r) 3.0 (2006):
Carnegiea n 1: caryophylloid dicot genus with only one species: saguaro [syn: Carnegiea, genus Carnegiea]