Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Herbaceous, grass-like aquatics or semi-aquatics. Corm branched or unbranched, 2–4-lobed. Leaves crowning corm, ligulate; base dilated and enclosing sporangia. Sporangia large, covered by thin membranous veil (velum) or naked, containing either megaspores or microspores. Megasporangia on outer leaves; megaspores large, usually white when dry, surface ornamented by tubercles, spines or ridges, rarely almost smooth. Microsporangia, if present, on inner leaves; microspores minute, surface smooth, tuberculate or spiny. Gametophyte unisexual, formed within spore wall; apogamous growth of sporophytes (without fertilization) common.

1 genus.

Source: Entwisle, T.J. (1994). Ferns and allied plants (Psilophyta, Lycopodiophyta, Polypodiophyta). In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne.
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life Life
kingdom Plantae
phylum Tracheophyta
order Isoetales
Higher taxa
family Isoetaceae
Subordinate taxa
genus Isoetes