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| Kingdom Plantae |
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Ceratophyllaceae -- accepted -- hornwort |
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Ceratophyllum L. -- accepted -- hornwort |
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Ceratophyllum apiculatum Cham. -- not accepted |
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Ceratophyllum australe Griseb. -- not accepted |
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Ceratophyllum demersum L. -- accepted -- coon's-tail, coontail, hornwort, common hornwort, coon's tail |
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Ceratophyllum demersum var. cristatum K. Schum. -- not accepted |
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Ceratophyllum demersum var. echinatum (A. Gray) A. Gray -- not accepted |
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Ceratophyllum echinatum A. Gray -- accepted -- spineless hornwort |
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Ceratophyllum floridanum Fassett -- not accepted -- Florida hornwort |
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Ceratophyllum llerenae Fassett -- not accepted |
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Ceratophyllum muricatum Cham. -- accepted -- prickly hornwort |
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Ceratophyllum muricatum ssp. australe (Griseb.) Les -- accepted -- prickly hornwort |
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Ceratophyllum submersum L. -- accepted -- soft hornwort |
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Ceratophyllum submersum ssp. muricatum (Cham.) Wilmot-Dear -- not accepted |
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Ceratophyllum submersum var. echinatum (A. Gray) Wilmot-Dear -- not accepted |
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