Accepted By:
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Abrams, L.R. & R. S. Ferris. 1960. Bignonias to Sunflowers. 4: 732 pp. In L.R. Abrams (ed.) Ill. Fl. Pacific States. Stanford University Press, Stanford.
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Brako, L. & J. L. Zarucchi. (eds.) 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45: i–xl, 1–1286.
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Corrêa. 1984. 53.
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Dillon, M. O. 1981. Family Compositae: Part II. Tribe Anthemideae. Fieldiana, Bot., n.s. 7: 1–21.
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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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Gleason, H. A. & A. J. Cronquist. 1991. Man. Vasc. Pl. N.E. U.S. (ed. 2) i–910. New York Botanical Garden, Bronx.
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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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Idárraga-Piedrahita, A., R. del C. Ortiz, R. Callejas Posada & M. Merello. 2011. Listado de las plantas vasculares del departamento de Antioquia. 2: 9–939. In A. Idárraga-Piedrahita, R. del C. Ortiz, R. Callejas Posada & M. Merello Fl. Antioquia: Cat.. Universidad de Antioquia, Medellín.
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Jørgensen, P. M. & S. León-Yánez. (eds.) 1999. Catalogue of the Vascular Plants of Ecuador. Monogr. Syst. Bot. Missouri Bot. Gard. 75: i–viii, 1–1181.
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Munz, P. A. 1974. Fl. S. Calif. 1–1086. University of California Press, Berkeley.
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Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley.
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