The Collaborative International Dictionary of English v.0.48:
Carex \Ca"rex\, n. [L., sedge.] (Bot.) A numerous and widely distributed genus of perennial herbaceous plants of the order Cypreace[ae]; the sedges. [1913 Webster]WordNet (r) 3.0 (2006):
Carex n 1: large genus of plants found in damp woodlands and bogs and ditches or at water margins: sedges [syn: Carex, genus Carex]