The Collaborative International Dictionary of English v.0.48:

Floccose \Floc*cose"\, a. [L. floccosus. Cf. 2d Flock, n.]
   1. Spotted with small tufts like wool. --Wright.
      [1913 Webster]

   2. (Bot.) Having tufts of soft hairs, which are often
      deciduous.
      [1913 Webster]

WordNet (r) 3.0 (2006):

floccose
    adj 1: (of plants) having tufts of soft woolly hairs