Lewis & Short

fĕrŭlācĕus, a, um, adj. [ferula].

  1. I. Made of fennel-giant: rudens, Plin. 34, 18, 50, § 170.
  2. II. Resembling fennel-giant: genus, Plin. 19, 9, 56, § 173: caulis, id. 27, 10, 62, § 89.