The Collaborative International Dictionary of English v.0.48:

Valerianaceous \Va*le`ri*an*a"ceous\, a. (Bot.)
   Of, pertaining to, or resembling, plants of a natural order
   (Valerianaceae) of which the valerian is the type. The
   order includes also the corn salads and the oriental
   spikenard.
   [1913 Webster]