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0Watersprite, Water horn fern Ceratopteris thalictroide
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Carlosa2008File:Ceratopteris cornuta in aquarium alone
Hickok, Warne, Fribourg1995What is C-Fern (Ceratoperis)
1998Flora of Australia
0Watersprite (Ceratopteris thalictroides
T. .Fl.Abyss, Coleman H.1998FloraBase: the Western Australian Flora
T. Stuart2000Hardy Fern Library
2012Encyclopedia of Life (EOL)
D. Stang2013Taenitis pinnata: Family Pteridaceae, Evolution info
Raul6542005Cyrtomium falcatum2.jpg
A. Spooner1997Ceratopteris thalictroides (L.) Brongn.
P. Summers2007Cyrtomium falcatum
J. T. Michel, Edage P.1979Plant Drawings
A. Spooner1997Flora Base, the western australian flora
A. Spooner1997FloraBase: The Western Australian Flora; Marsilea angustifolia R. Br.
M. Hassler2013Catalogue of Life: World Ferns
R. Cumming2005The World's Best Photos of marsilea
C. Alford1984Odds and Ends
G. M. Cunningam, W.E, M., P.L, M., J.H, L.1992Plants of Western New South Wales
0Atlas of Living Australia
D. L. Jones1998Flora of Australia Online
W. Cullina2008Native Ferns, Mosses and Grasses.
1998Flora of Australia Online: Lygodiaceae
0Flora of China
0Flora of North America
2013Lygodium flexuosum
2013Lygodium flexuosum (L.) Sw.:Ophioglossum scandens
L. Pons2005Scientists Identify New Moth That Attacks Invasive Fern
R. Spencer1995Ferns, Conifers and Their Allies
A. Spooner1997Lygodium flexuosum (L.) Sw.
E. Yadav, Mani, M., Ghosh, A. K., Sachan, N., Chandra, P.2012A review on therapeutic potential of Lygodium flexuosum Linn
0Lygodium flexuosum (L.) Sw.
2013Natural resource conservation service
S. B. Andrews1990Flora of Australia
1954Encyclopedia of Life
G. McCormack2007Cook Islands Bio
A. Spooner1990Florabase
A. Murdock, Hinkle A.2010Moorea Digital Floral Project
Department of Parks and Wildlife0Florabase
Eof Life0Encyclopedia of Life
P. D. Bostock, Holttum R. E.1998Flora of Australia
K. U. Kramer, McCarthy P. M.1998Acrostichum in Flora of Australia vol 48: Ferns, Gymnosperms and Allied Groups (P. McCarthy, ed) p241-242.
CABI2014Invasive Species Compendium
Department of Parks and Wildlife2013Conservation codes for Western Australia Flora and Fauna
Ophioglossaceae1998Flora of Australia
M. A. Hyde, Wursten, B. T., Ballings, P., Palgrave, C.2014Flora of Zimbabwe: Genus Page: Ophioglossum.
0Australian national Botanic Gardens
0Flora of North America


Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith