Robert W. Freckmann Herbarium


  Ceratophyllum demersum L. image
Photographer: Dennis W. Woodland           

Botancial Illustration

Kurt Stüber

Paul Skawinski

Paul Skawinski

Paul Skawinski

Robert W. Freckmann
Family Ceratophyllaceae
Ceratophyllum demersum L.
coon's-tail, hornwort
Ceratophyllum: from the Greek keras, "a horn," and phyllon, "leaf," alluding to the stiff and narrow leaf divisions, this is a genus often called hornwort
demersum: living under water, submerged
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
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Status: Native
Plant: perennial, submerged aquatic, evergreen; stems long, trailing; lacks true roots, may anchor in sediment by modified leaves
Flower: tiny, male and female flowers, in leaf axils, on separate plants
Fruit:dry seed with 2 spines at the base and 1 at the top
Leaf:whorled, stiff, 5-12 per node, forks 1-2 times, edges toothed with small spine at tip, spaced whorls closer at branch ends
Habitat: water to >7' deep
(Glossary)

More Information Natural Communities Herbarium Specimens
All Ceratophyllum list Google- Images or Text

Flora of North America (off site)
Synonyms 
Ceratophyllum apiculatum Cham.
Ceratophyllum demersum L. var. apiculatum (Cham.) Asch.
Ceratophyllum demersum L. var. apiculatum (Cham.) Garcke

         
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