Ceratophyllaceae
Hornwort Family
1 genera
2 species
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Ceratophyllum demersumcoon's-tail
Distribution: Throughout much of temperate North America
Habitat: Standing to slow-moving water, from the lowlands to mid-elevations in the mountains
Origin: Native
Flowers: June - September
Ceratophyllum echinatumspineless hornwort
Origin: Native