The International Plant Names Index (IPNI), 2007 - 2011, database (version 2011)
The International Plant Names Index, botanical information system from the Royal Botanic Gardens, Kew, the Harvard University Herbaria, and the Australian National Herbarium, available at http://www.ipni.org/index.html
Thelypteridaceae of North America Update, database (version 2011)
Updated for ITIS by the Flora of North America Expertise Network, in connection with an update for USDA PLANTS (2007-2010)
Fosberg, F. R., M.-H. Sachet, and R. Oliver
Geographical checklist of the Micronesian Pteridophyta and Gymnospermae
Journal/Book Name, Vol. No.:
Micronesica, vol. 18. no. 1
ITIS taxonomy is based on the latest scientific consensus available,
and is provided as a general reference source for interested parties.
However, it is not a legal authority for statutory or regulatory purposes.
While every effort has been made to provide the most reliable and up-to-date
information available, ultimate legal requirements with respect to species
are contained in provisions of treaties to which the United States is a
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been published in the Federal Register. For further information on U.S.
legal requirements with respect to protected taxa, please contact the
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