GleP, VVP, GipP, OtP, WaP, GGr, DunT, EGL, EGU, WPro, HSF, OtR, Strz.
Three varieties; only the type variety present in Victoria. See P. occidentalis var. occidentalis profile for description.
Conn, B.J. (1994). Iridaceae. In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons, pp. 686–716. Inkata Press, Melbourne.