Taxon  Report   1874    
Ceratophyllum demersum  L.
Coon's tail,  Hornwort
Ceratophyllum demersum
© 2008 Neal Kramer
Photos from
CalPhotos / Calflora
Ceratophyllum demersum
© 2008 Neal Kramer
Ceratophyllum demersum
© 2012 Ron Vanderhoff
Ceratophyllum demersum, a dicot, is a perennial herb that is native to California.

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Ceratophyllum demersum
© 2013 Ron Vanderhoff
Communities: wetland-riparian

Wetlands: Occurs in wetlands

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Ceratophyllum apiculatum
PLANTS: Ceratophyllum demersum var. apiculatum
More information about  Ceratophyllum demersum
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 16, 2019).