psythĭus or psĭthĭus, a, um, adj., = ψύθιος (ψιθ-),
psythian , a designation of a species of vine: vitis, Verg. G. 4, 269; Col. 3, 2, 24.—Called also simply psythĭa , ae, f., Verg. G. 2, 93; and in plur.: psythiae (sc. uvae), Stat. S. 4, 9, 38.— Neutr. subst. : psythĭum , ii, a kind of raisin - wine , Plin. 14, 9, 11, § 80.