Literature

Authors	Year	Title
L. Boulos, M. el-Hadidi N.	1984	The Weed Flora of Egypt
W. Cullina, Society N. England Wi	2000	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
T. Nuttall	1818	The genera of North American plants, and a catalogue of the species, to the year 1817.
J. W. Kadereit, Jefferey C.	2007	The Families and Genera of Vascular Plants
A. Gray	1884	Synoptical Flora of North America
Y. Gutterman	2002	Survival strategies of annual desert plants: Adaptations of desert organisms
Linnaeus	1753	Species Plantarum
C. Louis L’Heritier	1789	Sertum Anglicum seu Plantae Rariores quae in Hortus juxta Londinum, Imprimis in Hortus Regio Kewensi Excoluntur
J. L. Harper	1977	Population biology of plants
D. E. Moerman	1998	Native American Ethnobotany
G. L. Nesom	2006	Liatris
S. Donaldson	2004	Invasive Weeds of the Lake Tahoe Basin
H. A. Gleason	1952	Illustrated Flora of the Northeastern United States and Adjacent Canada
J. Hill	1768	Hortus Kewensis: Sistens herbas exoticas, indigenasque rariores, in area botanica, ... Auctore Johanne Hill
W. Aiton	1789	Hortus Kewensis, or, A catalogue of the plants cultivated in the Royal Botanic Garden at Kew.
E. Spach	1841	Histoire Naturelle des vegetaux
J. H. Miller, Miller K.	2005	FOREST PLANTS OF THE SOUTHEAST AND THEIR WILDLIFE USES
J. L. Strother	2006	Flora of North America
T. Walter	1788	Flora caroliniana: secunda systema vegetabilium perillustris Linnaei digesta...
A. Michaux	1803	Flora boreali-americana :sistens caracteres plantarum quas in America septentrionali collegit et detexit Andreas Michaux.
K. Polycarp J. Sprengel	1826	Caroli Linnaei... Systema vegetabilium/Curante Curtio Sprengel
C. von Linné, Salv, ii. L.	1753	Caroli Linnaei ... Species plantarum :exhibentes plantas rite cognitas, ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas...
K. Bremer	1994	Asteraceae: Cladistics and Classification
N. Lord Britton, Brown A.	1913	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)
N. Lord Britton, Brown A.	1913	An Illustrated Flora of the Northern United States, Canada And The British Possessions
W. G. Schmid	2002	An Encyclopedia of Shade perennials