Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* ărundĭfer, ărundĭnācĕus, ărundo and its derivv., v. harundifer, etc.
hărundĭnācĕus (ar-), a, um, adj. [harundo], like a reed, Plin. 18, 7, 10, § 58.