Copyright, citation, and disclaimers


Unless otherwise indicated, content on this website was created and/or authored by the USDA APHIS PPQ Science and Technology (S&T) Beltsville Laboratory, MD, USA, the Centre for Phytophthora Science and Management of Murdoch University in Western Australia, and the World Phytophthora Genetic Resource at University of California, USA. The website was created and is hosted through collaboration with the USDA APHIS PPQ S&T Identification Technology Program at the Fort Collins Laboratory, CO, USA. The content is in the public domain and may be freely used unless otherwise indicated. However, we request that with any subsequent use of this work, appropriate acknowledgement is given to the authors and institutions (see below for suggested citation).

Suggested citation

Abad, Z.G., Burgess T., Bienapfl J.C., Redford A.J., Coffey M., and Knight L. 2019. IDphy: Molecular and morphological identification of Phytophthora based on the types. USDA APHIS PPQ S&T Beltsville Lab, USDA APHIS PPQ S&T ITP, Centre for Phytophthora Science and Management, and World Phytophthora Collection. <date you accessed site>

NOTE: The authors of IDphy encourage scientists using this website to include, in addition to the reference cited above, the citation of the original publication of the species from where the nomenclature and other information was gathered.

Image credits

All images in the key and fact sheets/image gallery were taken by Gloria Abad and Treena Burgess unless otherwise noted.


While the authors have made every effort to provide accurate information in IDphy, the authors and associated institutions specifically disclaim all legal liability with respect to the accuracy, completeness, or usefulness of any information contained in this tool. The authors and associated institutions shall assume no legal liability for any damages, including direct, indirect, consequential, compensatory, special, punitive, or incidental damages arising from or relating to the use of "IDphy: molecular and morphological identification of Phytophthora based on the types" or the information and materials provided by or linked from "IDphy: molecular and morphological identification of Phytophthora based on the types".

Many of the findings and conclusions in this website have not been formally disseminated by the U.S. Department of Agriculture and should not necessarily be construed to represent agency determination or policy.

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Mention of companies or commercial products does not imply recommendation or endorsement by the USDA over others not mentioned. USDA neither guarantees nor warrants the standard of any product mentioned. Product names are mentioned solely to report factually on available data and to provide specific information.