Literature

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