Regarded as comprising two subspecies, with subsp. arachnoideum (Kaulf.) J.A.Thomson being endemic to Central and South America. Only the typical subspecies present in Victoria (and Australia), see profile under subsp. esculentum.
Source:
Entwisle, T.J. (1994). Ferns and allied plants (Psilophyta, Lycopodiophyta, Polypodiophyta). In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons, pp. 13–111. Inkata Press, Melbourne.
