Ceratophyllaceae

Spineless hornwort

Ceratophyllum echinatum A.Gray

Family: Ceratophyllaceae
Genus: Ceratophyllum

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Spineless hornwort: Ceratophyllum echinatum (Prickly Hornwort) - Hudson, OH, USA — Photo: Robert Curtis, Summit Metro Parks , iNaturalist observer, CC BY 4.0, from Wikimedia Commons

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Common names

By language (1)

English: Spineless hornwort, Hornwort

Synonyms

Ceratophyllum demersum var. echinatum (A.Gray) A.Gray
Ceratophyllum submersum var. echinatum (A.Gray) Wilmot-Dear
Fassettia echinata (A.Gray) Mavrodiev

Characteristics

Growth habit: Forb/herb
Lifespan: Perennial
In the US and Canada: Canada: native, Lower 48 states: native

Photos

Photo: Robert Curtis, Summit Metro Parks , iNaturalist observer, CC BY 4.0, from Wikimedia Commons
Photo: Robert Curtis, Summit Metro Parks , iNaturalist observer, CC BY 4.0, from Wikimedia Commons
Photo: Robert Curtis, Summit Metro Parks , iNaturalist observer, CC BY 4.0, from Wikimedia Commons
Photo: Alex Karasoulos, CC BY 4.0, from Wikimedia Commons
Photo: Becky Dill, CC0, from Wikimedia Commons
Photo: Norma Malinowski, CC BY 4.0, from Wikimedia Commons
Photo: Taro Ietaka, CC BY 4.0, from Wikimedia Commons
Photo: Norma Malinowski, CC BY 4.0, from Wikimedia Commons
Photo: Timothy McNitt, CC BY 4.0, from Wikimedia Commons

More in Ceratophyllum

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.