The Collaborative International Dictionary of English v.0.48:

Quadrifarious \Quad`ri*fa"ri*ous\, a. [L. quadrifarius fourfold,
   fr. quattuor four: cf. F. quadrifari['e]. Cf.
   Multifarious.]
   Arranged in four rows or ranks; as, quadrifarious leaves.
   --Loudon.
   [1913 Webster]