The Collaborative International Dictionary of English v.0.48:

Cumfrey \Cum"frey\ (k?m"fr?), n. (Bot.)
   See Comfrey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

cumfrey
    n 1: perennial herbs of Europe and Iran; make rapidly growing
         groundcover for shaded areas [syn: comfrey, cumfrey]