her·bar·i·um 
(hûr-bârē-əm, ûr-)
(hûr-bârē-əm, ûr-)n. pl. her·bar·i·ums or her·bar·i·a (-ē-ə)
1. A collection of dried plants mounted, labeled, and systematically arranged for use in scientific study.
2. A place or institution where such a collection is kept.
[Late Latin herbārium, from Latin herbārius, one skilled in herbs, from Latin herba, herb, vegetation.]