Coon's Tail Ceratophyllum demersum Linnaeus    Synonyms: Common Hornwort, Coontail, Rigid Hornwort.
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Nymphaeales   >   Family Ceratophyllaceae   >   Genus Ceratophyllum   

Description:

Ceratophyllum demersum has whorls of dichotomously branched leaves that furcate only once (rarely twice). The similar Ceratophyllum echinatum has leaves that furcate at least twice.

Where to find:

Coon's Tail is an aquatic vascular plant that grows in fresh or brackish water throughout Maryland. It may become a pest in ponds, lakes and shallow creeks with high nutrient inputs.

There are 83 records in the project database.

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Coon's Tail in Anne Arundel Co., Maryland (6/25/2011). Photo by Bill Harms. (MBP list)

Coon's Tail in Prince George's Co., Maryland (6/14/2016). Photo by Bill Harms. (MBP list)

Coon's Tail in Anne Arundel Co., Maryland (3/3/2013). Photo by Jim Brighton. (MBP list)

Coon's Tail in Montgomery Co., Maryland (2/18/2018). Identified by Dr. John Hall. Photo by Bill Hubick. (MBP list)

Coon's Tail in Garrett Co., Maryland (12/29/2015). Photo by Seth Metheny. (MBP list)

Coon's Tail in Baltimore Co., Maryland (7/9/2021). (c) Allegra Marcell, some rights reserved (CC BY-NC). Photo by moonchild_161 via iNaturalist. (MBP list)

Coon's Tail in Howard Co., Maryland (7/10/2012). Photo by Jon Corcoran. (MBP list)

Coon's Tail in Harford Co., Maryland (8/29/2016). Photo by Dave Webb. (MBP list)

Coon's Tail in Charles Co., Maryland (10/6/2017). (c) adrianelz, some rights reserved (CC BY-NC). Photo by adrianelz via iNaturalist. (MBP list)

Coon's Tail in Prince George's Co., Maryland (6/28/2020). (c) johnbotany, some rights reserved (CC BY-NC). Photo by John Hall. (MBP list)

Coon's Tail in Prince George's Co., Maryland (5/20/2016). (c) johnbotany, some rights reserved (CC BY-NC). Photo by John Hall. (MBP list)

A comparison of Hydrilla (left) and Coon's Tail (right) - Howard Co., Maryland (7/10/2012). Photo by Jon Corcoran. (MBP list)

Coon's Tail in Baltimore Co., Maryland (9/6/2018). (c) josh rudder, some rights reserved (CC BY-NC). Photo by josh_rudder via iNaturalist. (MBP list)

Coon's Tail in a pond in Howard Co., Maryland (7/10/2012). Photo by Jon Corcoran. (MBP list)

Coon's Tail in Charles Co., Maryland (10/6/2017). (c) Monica Boedigheimer, some rights reserved (CC BY-NC). Photo by Monica Boedigheimer via iNaturalist. (MBP list)

Coon's Tail in Anne Arundel Co., Maryland (6/25/2011). Photo by Bill Harms. (MBP list)

Coon's Tail in Anne Arundel Co., Maryland (6/25/2011). Photo by Bill Harms. (MBP list)


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