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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Hydrocharitaceae
Partially or wholly submerged herbs, sometimes marine
Hydrocharitaceae
consider the other alternative
Ovary
inferior; male flowers with more than 1
stamen
choose this alternative
reject this alternative
Marine submerged plants with creeping stems
Halophila
choose this alternative
reject this alternative
Fresh water plants