Key to Tasmanian Dicots
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Eleocharis (Cyperaceae) 4b:106
Tasmania has four native species of Eleocharis. These are all erect aquatic or subaquatic perennial herbs. The inflorescence is quite distinctive - an erect, cylindrical stem topped by a compact, cylindrical or conical spike that is only about as wide as the stem (without a leafy bract extending up the stem). The flowers are hermaphrodite, but the stamens are exposed at a different time from the styles, so that the inflorescences look like they are unisexual.
 

 
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