Ceratophyllum demersum L.
Family: Ceratophyllaceae
coon's-tail,  more...
[Ceratophyllum apiculatum Cham.,  more]
Ceratophyllum demersum image
Dennis W. Woodland  
Etymology: 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
Plants: perennial, submerged aquatic, evergreen; stems long, trailing; lacks true roots, may anchor in sediment by modified leaves
Leaves: whorled, stiff, 5-12 per node, forks 1-2 times, edges toothed with small spine at tip, spaced whorls closer at branch ends
Flowers: tiny, male and female flowers, in leaf axils, on separate plants
Fruits: dry seed with 2 spines at the base and 1 at the top
Habitat: water to >7' deep
- leaves branching once or twice

- fruits with three projections

- leaves branching once or twice

- fruits with three narrow projections

Ceratophyllum demersum image
Paul Skawinski  
Ceratophyllum demersum image
Paul Skawinski  
Ceratophyllum demersum image
Robert W. Freckmann  
Ceratophyllum demersum image
Paul Skawinski  
Ceratophyllum demersum image
Botancial Illustration  
Ceratophyllum demersum image
Kurt Stüber  
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Aaron_Carlson  
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Aaron_Carlson  
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
Ceratophyllum demersum image
   View Genus       View Specimen Records