quinquefarious

from The Collaborative International Dictionary of English v.0.48

Quinquefarious \Quin`que*fa"ri*ous\, a. [From L. quinque five:
   cf. F. quinqu['e]fari['e]. Cf. {Bifarious}.] (Bot.)
   Arranged in five vertical rows; pentastichous. --Gray.
   [1913 Webster]