@article {450,
	title = {Encyclopedia of Life},
	url = {http://eol.org/pages/36905/overview}
}
@inbook {448,
	title = {Biology of Plants},
	booktitle = {Biology of Plants},
	year = {2004},
	pages = {368-407},
	publisher = {W.H Freeman and Company Publishers},
	organization = {W.H Freeman and Company Publishers},
	chapter = {Seedless Vascular Plants},
	address = {USA},
	author = {Raven and Evert and Eichhorn}
}
@article {447,
	title = {The IUCN Red List of Threatened Species},
	number = {version 2014.2},
	year = {2014},
	url = {www.iucnredlist.org}
}
@article {446,
	title = {Flora of North America},
	url = {http://www.efloras.org/florataxon.aspx?flora_id=1\&taxon_id=122987}
}
@article {445,
	title = {Australian national Botanic Gardens },
	url = {from http://www.anbg.gov.au/fern/taxa/ophioglossum.}
}
@article {443,
	title = {Flora of Zimbabwe: Genus Page: Ophioglossum.},
	volume = {2014},
	number = {17 September 2014},
	year = {2014},
	url = {http://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=8, },
	author = {Hyde, MA and Wursten, BT and Ballings, P and Coates Palgrave}
}
@inbook {442,
	title = {Flora of Australia},
	booktitle = {Flora of Australia},
	year = {1998},
	pages = {103},
	publisher = {CSIRO},
	organization = {CSIRO},
	chapter = {Ophioglossaceae},
	address = {Canberra}
}
