There are two varieties. Astelia alpina subsp. alpina occurs only in Tasmania. See profile for the Victorian variety novae-hollandiae under that name.
HSF, HNF, VAlp.
Conran, J.G. (1994). Liliaceae. In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons, pp. 637–686. Inkata Press, Melbourne.