POTAMOGETONACEAE
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publication ID |
https://doi.org/10.5281/zenodo.293845 |
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persistent identifier |
https://treatment.plazi.org/id/03BD9943-FFBE-FF9E-C66C-F6F5F9FA879D |
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treatment provided by |
Plazi |
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scientific name |
POTAMOGETONACEAE |
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CLXXVII. POTAMOGETONACEAE View in CoL View at ENA 3
Aquatic herbs, submerged or with floating leaves, occasionally subterrestrial. Stems elongated. Leaves alternate or opposite (rarely in whorls of 3), sheathing at the base. Flowers hermaphrodite, ebracteate, in pedunculate spikes. Perianth of 4 unguiculate, sepaloid segments. Stamens 4, adnate at the base to the perianth-segments; anthers sessile, opening by longitudinal slits. Carpels (l-)4, free or shortly connate at the base, 1 -ovulate; styles usually short. Fruitlets drupaceous or achenial. Seeds without endosperm; embryo unciform or spiral (coiled more than 1 complete turn).
1 Leaves all opposite or rarely in whorls of 3; fruitlets achenial
2. Groenlandia 1 Leaves alternate, or the involucral ones subopposite; fruitlets drupaceous 1. Potamogeton
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.