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Cronquist, A. J. 1994. Asterales. 5: 1–496. In A. J. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal & P. K. Holmgren (eds.) Intermount. Fl.. Hafner Pub. Co., New York.
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Flora of North America Editorial Committee, e. 2006. Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. 19: i–xxiv, 1–579. In Fl. N. Amer.. Oxford University Press, New York.
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Gleason, H. A. 1968. The Sympetalous Dicotyledoneae. vol. 3. 596 pp. In H. A. Gleason Ill. Fl. N.E. U.S.. New York Botanical Garden, New York.
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Great Plains Flora Association. 1986. Fl. Great Plains i–vii, 1–1392. University Press of Kansas, Lawrence.
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Hickman, J. C. 1993. The Jepson Manual: Higher Plants of California 1–1400. University of California Press, Berkeley.
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Hitchcock, C. H., A. J. Cronquist, F. M. Ownbey & J. W. Thompson. 1984. Compositae. Part V.: 1–343. In C. L. Hitchcock Vasc. Pl. Pacif. N.W.. University of Washington Press, Seattle.
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López-Vinyallonga, K. Romaschenko, A. Susanna & N. Garcia-Jacas. 2011. Systematics of the Arctioid group: Disentangling Arctium and Cousinia (Cardueae, Carduinae). Taxon 60(2): 539–554.
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Marticorena, C. F. S. & M. Quezada. 1985. Catálogo de la Flora Vascular de Chile. Gayana, Bot. 42: 1–157.
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Moss, E. H. 1983. Fl. Alberta (ed. 2) i–xii, 1–687. University of Toronto Press, Toronto.
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Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley.
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Radford, A. E., H. E. Ahles & C. R. Bell. 1968. Man. Vasc. Fl. Carolinas i–lxi, 1–1183. University of North Carolina Press, Chapel Hill.
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Small, J. K. 1933. Man. S.E. Fl. i–xxii, 1–1554. Published by the Author, New York.
 
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Zuloaga, F. O., M. J. Belgrano & C. A. Zanotti. 2019. Actualización del Catálogo de las Plantas Vasculares del Cono Sur. Darwiniana, n.s. 7(2): 208–278 [Apéndice 1: 1–937; Apénd. 2: 1–21].
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Zuloaga, F. O., O. Morrone, M. J. Belgrano, C. F. S. Marticorena & E. Marchesi. (eds.) 2008. Catálogo de las plantas vasculares del Cono Sur. Monogr. Syst. Bot. Missouri Bot. Gard. 107(1–3): i–xcvi, 1–3348.
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