Key to Tasmanian Dicots
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Isoetes (Isoetaceae)

 
Tasmania has five native species of Isoetes (quill worts). These are all aquatic or semi-aquatic plants with cylindrical or conical leaves arranged in grass-like tufts (though the leaves are often much thicker than those of most grasses). The spores occur in sporangia in the axils of the leaves.

Key to species 
University of Tasmania
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