Silvae

from The Collaborative International Dictionary of English v.0.48
Silva \Sil"va\, n.; pl. E. {Silvas}, L. {Silvae}. [L., properly,
   a wood, forest.] [Written also {sylva}.] (Bot.)
   (a) The forest trees of a region or country, considered
       collectively.
   (b) A description or history of the forest trees of a
       country.
       [1913 Webster]
    

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