Ceratophyllaceae
Hornwort Family
1 genera
2 species
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Ceratophyllum demersumcoon's-tail
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Standing to slow-moving water, from the lowlands to mid-elevations in the mountains
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Ceratophyllum echinatumspineless hornwort
Origin: Native
Growth Duration: Perennial