The Collaborative International Dictionary of English v.0.48:

Cespitous \Ces"pi*tous\, a. [See Cespitose.]
   Pertaining to, consisting, of resembling, turf; turfy.
   [1913 Webster]

         A cespitous or turfy plant has many stems from the same
         root, usually forming a close, thick carpet of matting.
   --Martyn.
   [1913 Webster]