Copyright, citation, and disclaimers

Copyright notice

Unless otherwise indicated, content on this site was created and/or authored by North Carolina State University (NCSU) with the Identification Technology Program (ITP) under a cooperative agreement, by ITP in cooperation with the California Department of Food and Agriculture (CDFA), and/or by ITP. This content may be freely distributed or copied as in the public domain. However, it is requested that in any subsequent use of this work ITP, NCSU, and CDFA be given appropriate acknowledgement (see below).

Many of the photographs in this tool were produced by Shaun Winterton. Original drawings were created by Heather Hartzog (USDA APHIS PPQ S&T), Shaun Winterton, and Julia Scher. All other photographs, drawings, and other digital images in this tool are credited to others. The photographers, organizations and/or businesses who gave permission to use their digital images are credited in some but not all image captions, directly on some images themselves, and in the acknowledgements.

This site also contains information, text, and images created and/or prepared by individuals or institutions other than ITP, NCSU, or CDFA, that may be protected by copyright. Sources of information and text are mentioned in the acknowledgements. In most instances, the origin of images has been indicated in image captions and in the Acknowledgements. Users must seek permission from the copyright owner(s) to use this material. Note that photographs taken by the author (S.L. Winterton), although not preceded by a copyright symbol in captions, may be protected by copyright. Links to the internet sites of some individuals and institutions are available on the Acknowledgements page. Contact Julia Scher ( if you need assistance identifying or locating the copyright owner or to check on the copyright status of a particular image.

Suggested citation

Winterton, S., Scher, J., and Redford, A.J. 2015. Aquarium and Pond Plants of the World, Edition 2.1. USDA APHIS PPQ Identification Technology Program, North Carolina State University, and California Department of Food and Agriculture.
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External links

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