Key to Tasmanian Dicots
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Marsilea (Marsileaceae)

 
Marsilea mutica (Smooth Nardoo) is the only member of this genus in Tasmania. It is a very rare aquatic plant in Tasmania, known only from a single dam at Geeveston and on the creek downstream. It is considered to be introduced. It is an extremely distinctive plant. The leaf lamina strongly resembles a four-leaved clover and floats on the surface of the water. The leaves have long stalks arising from the rhizome which is typically embedded in a muddy substrate. The sporangia occur in sporocarps attached by stalks to the rhizome.
 

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