The Collaborative International Dictionary of English v.0.48:

Ferulaceous \Fer`u*la"ceous\, a. [L. ferulaceus, fr. ferula rod:
   cf. F. f['e]rulac['e].]
   Pertaining to reeds and canes; having a stalk like a reed;
   as, ferulaceous plants.
   [1913 Webster]