@book {111,
	title = {Caroli Linnaei ... Species plantarum :exhibentes plantas rite cognitas, ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas...},
	year = {1753},
	author = {Linné, Carl von and Laurentii Salvii.}
}
@book {250,
	title = {Species Plantarum},
	volume = {2},
	year = {1753},
	author = {Linnaeus}
}
@book {156,
	title = {An Illustrated Flora of the Northern United States, Canada And The British Possessions},
	volume = {3},
	year = {1913},
	publisher = {Charles Scribner{\textquoteright}s Sons},
	organization = {Charles Scribner{\textquoteright}s Sons},
	edition = {2},
	author = {Nathaniel Lord Britton and Addison Brown}
}
@book {235,
	title = {An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian (1913)},
	year = {1913},
	publisher = {New York : C. Scribner{\textquoteright}s sons},
	organization = {New York : C. Scribner{\textquoteright}s sons},
	url = {http://www.archive.org/details/illustratedflora03brit},
	author = {Nathaniel Lord Britton and Addison Brown}
}
@book {268,
	title = {Synoptical Flora of North America},
	volume = {2, Part 1},
	year = {1884},
	publisher = {American Book Company},
	organization = {American Book Company},
	address = {New York, NY},
	author = {Asa Gray}
}
@book {524,
	title = {Histoire Naturelle des vegetaux},
	volume = {10},
	year = {1841},
	publisher = {Librairie Encyclopedique de Roret},
	organization = {Librairie Encyclopedique de Roret},
	address = {Paris},
	author = {Edouard Spach}
}
@book {186,
	title = {Caroli Linnaei... Systema vegetabilium/Curante Curtio Sprengel},
	volume = {3},
	year = {1826},
	publisher = {Gottingae :Sumtibus Librariae},
	organization = {Gottingae :Sumtibus Librariae},
	author = {Kurt Polycarp Joachim Sprengel}
}
@book {179,
	title = {The genera of North American plants, and a catalogue of the species, to the year 1817.},
	volume = {2},
	year = {1818},
	publisher = {D. Heartt},
	organization = {D. Heartt},
	address = {Philadelphia, PA},
	author = {Thomas Nuttall}
}
@book {152,
	title = {Flora boreali-americana :sistens caracteres plantarum quas in America septentrionali collegit et detexit Andreas Michaux.},
	volume = {2},
	year = {1803},
	pages = {89-90},
	author = {Andre Michaux}
}
@book {205,
	title = {Hortus Kewensis, or, A catalogue of the plants cultivated in the Royal Botanic Garden at Kew.},
	volume = {3},
	year = {1789},
	pages = {250-251},
	address = {London},
	author = {William Aiton}
}
@book {319,
	title = {Sertum Anglicum seu Plantae Rariores quae in Hortus juxta Londinum, Imprimis in Hortus Regio Kewensi Excoluntur},
	year = {1789},
	address = {Paris},
	author = {Charles Louis L{\textquoteright}Heritier}
}
@book {118,
	title = {Flora caroliniana: secunda systema vegetabilium perillustris Linnaei digesta...},
	year = {1788},
	note = {Flora caroliniana: secunda systema vegetabilium perillustris Linnaei digesta; characteres essentiales naturalesve et differentias veras exhibens; cum emendationibus numerosis: descriptionum antea evulgatarum: adumbrationes stirpium plus mille continens: necnon, generibus novis non paucis, speciebus plurimis novisq.},
	address = {London},
	author = {Walter, Thomas}
}
@book {320,
	title = {Hortus Kewensis: Sistens herbas exoticas, indigenasque rariores, in area botanica, ... Auctore Johanne Hill},
	year = {1768},
	address = {London},
	author = {John Hill}
}
@book {262,
	title = {Illustrated Flora of the Northeastern United States and Adjacent Canada},
	series = {The Sympetalous Dicotyledoneae},
	volume = {3},
	year = {1952},
	pages = {503-505},
	publisher = {Hafner Press. A Division of Macmillian Publishing Co., INC},
	organization = {Hafner Press. A Division of Macmillian Publishing Co., INC},
	address = {New York},
	author = {Gleason, Henry A.}
}
@book {648,
	title = {The Weed Flora of Egypt},
	year = {1984},
	publisher = {American University Press},
	organization = {American University Press},
	address = {Cairo},
	author = {Boulos, L. and Nabil el-Hadidi, M.}
}
@book {663,
	title = {Population biology of plants},
	year = {1977},
	publisher = {Academic Press},
	organization = {Academic Press},
	address = {New York},
	author = {Harper, J.L.}
}
@book {649,
	title = {Asteraceae: Cladistics and Classification},
	year = {1994},
	publisher = {Timber Press},
	organization = {Timber Press},
	address = {Portland, Oregon},
	author = {Bremer, K.}
}
@book {272,
	title = {An Encyclopedia of Shade perennials},
	year = {2002},
	pages = {173},
	publisher = {Timber Press, Inc},
	organization = {Timber Press, Inc},
	address = {Portland},
	author = {Schmid, W.George}
}
@book {662,
	title = {Survival strategies of annual desert plants: Adaptations of desert organisms},
	year = {2002},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {Berlin Heidelberg},
	author = {Gutterman, Y.}
}
@book {259,
	title = {The New England Wild Flower Society Guide to Growing and Propagating Wildflowers of the United States and Canada: A Guide to Growing and Propagating Native Flowers of North America},
	year = {2000},
	pages = {322},
	publisher = {Houghton Mifflin Harcourt},
	organization = {Houghton Mifflin Harcourt},
	author = {William Cullina and New England Wildflower Society}
}
@book {161,
	title = {Native American Ethnobotany},
	year = {1998},
	publisher = {Timber Press, Inc.},
	organization = {Timber Press, Inc.},
	address = {Portland, OR},
	author = {Daniel E. Moerman}
}
@book {218,
	title = {Flora of North America},
	series = {Magnoliophyta: Asteridae(in part): Asteraceae, part1},
	volume = {19},
	year = {2006},
	pages = {202-203},
	publisher = {Oxford University Press, Inc.},
	organization = {Oxford University Press, Inc.},
	address = {New York},
	url = {www.fna.org},
	author = {Strother, John L},
	editor = {Flora of north America Editorial Commitee ,}
}
@book {120,
	title = {Liatris},
	series = {Flora of North America},
	volume = {21},
	year = {2006},
	publisher = {Oxford University Press, Inc.},
	organization = {Oxford University Press, Inc.},
	address = {New York},
	author = {Guy L. Nesom}
}
@book {691,
	title = {FOREST PLANTS OF THE SOUTHEAST AND THEIR WILDLIFE USES},
	year = {2005},
	publisher = {University of Georgia Press},
	organization = {University of Georgia Press},
	address = {Athens, Georgia},
	author = {Miller, James H. and Miller, Karl}
}
@book {451,
	title = {Invasive Weeds of the Lake Tahoe Basin},
	year = {2004},
	publisher = {University of Nevada Cooperative Extension},
	organization = {University of Nevada Cooperative Extension},
	author = {Susan Donaldson}
}
@book {642,
	title = {The Families and Genera of Vascular Plants},
	series = {Flowering Plants Eudicots Asterales},
	volume = {VIII},
	year = {2007},
	publisher = {Springer-Verlag Berlin Heidelberg},
	organization = {Springer-Verlag Berlin Heidelberg},
	address = {Berlin},
	author = {Kadereit, J.W. and C. Jefferey},
	editor = {K.Kubitzki}
}
