Source : Webster's Revised Unabridged Dictionary (1913)

Herbarium \Her*ba"ri*um\, n.; pl. E. {Herbariums}, L.
   {Herbaria}. [LL., fr. L. herba. See {Herb}, and cf. {Arbor},
   {Herbary}.]
   1. A collection of dried specimens of plants, systematically
      arranged. --Gray.

   2. A book or case for preserving dried plants.

Source : WordNet®

herbaria
     See {herbarium}