ramenta

from The Collaborative International Dictionary of English v.0.48

Ramenta \Ra*men"ta\ (r[.a]*m[e^]n"t[.a]), n. pl. [L.,
   scrapings.] (Bot.)
   Thin brownish chaffy scales upon the leaves or young shoots
   of some plants, especially upon the petioles and leaves of
   ferns. --Gray.
   [1913 Webster]