Source : Webster's Revised Unabridged Dictionary (1913)

Carex \Ca"rex\, n. [L., sedge.] (Bot.)
   A numerous and widely distributed genus of perennial
   herbaceous plants of the order {Cypreace[ae]}; the sedges.

Source : WordNet®

Carex
     n : large genus of plants found in damp woodlands and bogs and
         ditches or at water margins: sedges [syn: {genus Carex}]