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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
consider the other alternative
Fresh water plants
consider the other alternative
Leaves
cauline
,
opposite
or whorled, on elongated occasionally branched submerged stems with
adventitious
roots. Flowers unisexual,
axillary
consider the other alternative
Leaves
serrulate
, often
crisped
on the margins. Styles undivided, free to the base
Hydrilla