Riverweed Guide - New York Natural Heritage Program

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Summary

Conservation and Management

Habitat

Range

Identification Comments

Taxonomy

Additional Resources

Riverweed

Podostemum ceratophyllum Michx.

Dicots

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Kingdom: Plantae

      Phylum: Anthophyta

           Class: Dicots (Dicotyledoneae)

                Order: Podostemales

                     Family: (Podostemaceae)

Additional Common Names

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Horn-leaved riverweed
River-moss

Threadfoot

Synonyms

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Podostemon ceratophyllum Michaux
[orthographic variant]

Comments on the Classification

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When Michaux (1803) described this genus he used the spelling "Podostemum" in the text and then in a plate illustrating Podostemum ceratophyllum he used the spelling "Podostemon". It appears that Michaux's Podostemon was in error (Sprague 1933) and the family Podostemaceae (based on Podostemum) has been conserved as the correct spelling (McNeill et al. 2006). Podostemon is therefore considered an orthographic variant and is to be replaced by the correct spelling Podostemum.

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© 2004-2012 New York Natural Heritage Program, a partnership between
the New York State Department of Environmental Conservation and
the State University of New York College of Environmental Science and Forestry

Please cite this page as:
New York Natural Heritage Program. 2013. Online Conservation Guide for Podostemum ceratophyllum. Available from: http://www.acris.nynhp.org/guide.php?id=9250. Accessed May 22nd, 2013.