Accepted By:
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Cody, W. J. 1996. Fl. Yukon Terr. i–xvii, 1–669. NRC Research Press, Ottawa.
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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 Flora of North America Editorial Committee (eds.) Fl. N. Amer.. Oxford University Press, New York.
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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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Hultén, O. E. G. 1968. Flora of Alaska and neighboring territories. i–1008. In Fl. Alaska. Stanford University Press, Stanford.
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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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Porsild, A. E. & W. Cody. 1980. Vasc. Pl. Continental Northw. Terr. Canada i–viii, 1–607. National Museum of Natural Sciences, Ottawa.
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Scoggan, H. J. 1979. Dicotyledoneae (Loasaceae to Compositae). Part 4. 1117–1711 pp. In Fl. Canada. National Museums of Canada, Ottawa.
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Ulloa Ulloa, C., P. Acevedo-Rodríguez, S. G. Beck, M. J. Belgrano, R. Bernal, P. E. Berry, L. Brako, M. Celis, G. Davidse, S. R. Gradstein, O. Hokche, B. León, S. León-Yánez, R. E. Magill, D. A. Neill, M. H. Nee, P. H. Raven, H. Stimmel, M. T. Strong, J. L. Villaseñor Ríos, J. L. Zarucchi, F. O. Zuloaga & P. M. Jørgensen. 2017. An integrated assessment of vascular plants species of the Americas. Science 358: 1614–1617 [online suppl. materials: 1-23 + 1-2497], t. 1-4 [f. S1-5].
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Ulloa Ulloa, C., P. Acevedo-Rodríguez, S. G. Beck, M. J. Belgrano, R. Bernal, P. E. Berry, L. Brako, M. Celis, G. Davidse, S. R. Gradstein, O. Hokche, B. León, S. León-Yánez, R. E. Magill, D. A. Neill, M. H. Nee, P. H. Raven, H. Stimmel, M. T. Strong, J. L. Villaseñor Ríos, J. L. Zarucchi, F. O. Zuloaga & P. M. Jørgensen. 2018 (onwards). An integrated Assessment of Vascular Plants Species of the Americas (Online Updates).
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Welsh, S. L. 1974. Anderson's Fl. Alaska Adj. Parts Canada i–xvi, 1–724. Brigham Young University Press, Provo.
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