Literature

Authors	Year	Title
H. Cassini	1830	Zyégée
M. A. McGinley	1989	Within and among plant variation in seed mass and pappus size in Tragapogon dubius
S. Lev-Yadun	2000	Why are underground flowering and fruiting more common in Israel than anywhere else in the world?
D. L. Nash	1976	Vernonieae, Astereae, Inuleae, Heliantheae, Anthemideae, cynareae, Mutisee, Cichoreae
S. B. Jones, Jr.	1974	Vernonieae (Compositae) Chromosome Numbers
Cronquist, Hitchcock, C. L., al, et	1955	Vascular Plants of the Pacific Northwest
R. E. Perdue, Jr.	1962	Two New Varieties and a New Combination in Rudbeckia
H. Robinson	1991	Two New Species of Stifftia with Notes on Relationships of the Genus (Asteraceae: Mutisieae)
V. A. Funk, Robinson, H., Dillon, M. O.	2007	Tribe Liabeae (Cass, ex Dumort.) Rydb. (1927)
V. A. Funk, Robinson, H., Dillon, M. O.	2007	Tribe Liabeae (Cass, ex Dumort.) Rydb. (1927)
S. T. Lee, T. Davis, Z., Gardner, D. R., Colegate, S. M., Cook, D., Green, B. T., Meyerholtz, K. A., Wilson, C. R., Stegelmeier, B. L., Evans, T. J.	2010	Tremetone and Structurally Related Compounds in White Snakeroot (Ageratina altissima): A Plant Associated with Trembles and Milk Sickness
J. Panero, Funk V. A.	2002	Toward a phylogenetic subfamilial classification for the Compositae (Asteraceae)
H. Robinson	1976	Three New Asteraceae from Guerrero, Mexico
L. Boulos, M. el-Hadidi N.	1984	The Weed Flora of Egypt
J. L. Panero, Funk V. A.	2008	The value of sampling anomalous taxa in phylogenetic studies: major clades of the Asteraceae revealed.
V. Kaul, Koul, A. K., Sharma, M. C.	2000	The underground flower
V. A. Funk	1982	The Systematics of Montanoa (Asteraceae, Heliantheae)
N. R. C. S. USDA	2010	The PLANTS Database
J. Small	Submitted	The Origin and Development of the Compositae
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
E. Zamski, Ucko, O., Koller, D.	1983	The mechanism of root contraction in Gymnarrhena micrantha, a desert plant.
V. A. Funk, Robinson, H., Dillon, M.	1996	The Liabeae: Taxonomy, Phylogeny, and Biogeography
V. A. Funk, Robinson, H., Dillon, M.	1996	The Liabeae: Taxonomy, Phylogeny, and Biogeography
T. C. Pesacreta, Hasenstein K. H.	1999	The Internal Cuticle of Cirsium horridulum (Asteraceae) Leaves
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
T. M. Culley, Klooster M. R.	2007	The Cleistogamous Breeding System: A Review of Its Frequency, Evolution, and Ecology in Angiosperms
V. A. Funk, Susanna, A., Stuessy, T. F., Bayer, R. J.	2009	The basal grade of Compositae: Mutisiae (sensu Cabrera) and Carduioideae
G. Brown, Böer B.	2005	Terrestrail Plants
A. Gray	1884	Synoptical Flora of North America
R. E. Perdue, Jr.	1957	Synopsis of Rudbeckia Subgenus Rudbeckia
Y. Gutterman	2002	Survival strategies of annual desert plants: Adaptations of desert organisms
M. Cunningham, Parr P. D.	1990	Successful Culture of the Rare Annual Hemiparasite Tomanthera auriculata (Michx.) Raf. (Scrophulariaceae)
D. Koller, Roth N.	1964	Studies on the ecological and physiological significance of amphicarpy in Gymnarrhena micrantha (Compositae)
M. Lyndon Fernald, Schubert B. G.	1948	Studies of American Types in British Herbaria
	1974	Studies in the Liabeae (Asteraceae), II: Preliminary survey of the genera.
H. Robinson, Brettell R. D.	1974	Studies in the Liabeae (Asteraceae), II: Preliminary survey of the genera
H. Robinson	1983	Studies in the Liabeae (Asteraceae) XVI. New taxa from Peru.
M. Frotscher Koch	1930	Studies in the Anatomy and Morphology of the Composite Flower II. The Corollas of the Heliantheae and Mutisieae
L. E. Grulke, Neufeld, H. S., Davison, A. W., Roberts, M., Chappelka, A. H.	2006	Stomatal behavior of ozone-sensitive and -insensitive coneflowers ( Rudbeckia laciniata var. digitata ) in Great Smoky Mountains National Park
J. L. Strother	2006	Stokesia
U. S. Forest Service	2010	Species: Achillea millefolium
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
V. A. Funk, Robinson H.	2009	Sampera, a new genus of Liabeae (Compositae or Asteraceae) from the northern Andes
L. E. Urbatsch, Cox P. B.	2006	Rudbeckia
D. Simberloff, Stiling P.	1996	Risks of Species Introduced for Biological Control
B. L. Robinson, Greenman J. M.	1899	Revision of the Genera Montanoa, Perymenium and Zaluzania
L. Scott, Molano-Flores B.	2007	Reproductive Ecology of Rudbeckia Fulgida Ait. Var. Sullivantii (C. L. Boynt and Beadle) Cronq. (Asteraceae) in Northeastern Illinois
B. Zeide	1978	Reproductive behavior of plants in time