The following literature references are cited in the Washington Flora Checklist. These may include floras, journal articles, monographs, theses, web sites, and other scholarly resources.
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ALL
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Tardiff, B. and P. Morisset. 1990. Clinal morphological variation of Allium schoenoprasum in eastern North America. Taxon 39: 417–429.
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Taxon 50(2): 429-437.
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Taxon 59 (1): 227–240. February 2010.
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Taylor, N. 1909. Zannichelliaceae. In: N. L. Britton et al., eds. 1905+. North American Flora.... 47+ vols. New York. Vol. 17, pp. 13–27.
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Taylor, P. 1994. The genus Utricularia - a taxonomic monograph. Kew Bulletin Addional Series 14. Royal Botanic Gardens, Kew.
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Taylor, R. L. and S. Taylor. 1981. Taxus brevifolia in British Columbia. Davidsonia 12(4): 89–94.
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The Angiosperm Phylogeny Group. 2003. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II. Bot. J. Linn. Soc. 141: 399–436.
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Thompson, S. A. 1995. Systematics and Biology of the Araceae and Acoraceae of Temperate North America. Ph.D. dissertation. University of Illinois. Urbana-Champaign.
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Thorne, R. F. 1992. Classification and Geography of the Flowering Plants. Bot. Rev. 58: 225-348.
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Thorne, R. F. 1993c. Hydrocharitaceae. In: J. C. Hickman, ed. 1993. The Jepson Manual: Higher Plants of California. Berkeley, Los Angeles, and London. Pp. 1150–1151.
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Thum, R. A., M. P. Zuellig, M. E. Moody, C. Vossbrinck, and R. L. Johnson. 2011. Molecular markers reconstruct the invasion history of variable leaf watermilfoil (Myriophyllum heterophyllum) and distinguish it from closely related species. Biol. Invasions 13: 1687–1709.
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Tillett, S. S. 1967. The maritime species of Abronia (Nyctaginaceae). Brittonia 19: 299-327.
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Tisch, E. L. 2001. Corallorhiza maculata var. ozettensis (Orchidaceae), a new coral-root from coastal Washington. Madroño 48: 40-42.
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Toman, J. 1972. A taxonomic survey of the genera Petasites and Endocellion. Folia Geobot. Phytotaxon. 7: 381-406.
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Tomlinson, P. B. and U. Posluszny. 1976. Generic limits in the Zannichelliaceae (sensu Dumortier). Taxon 25: 273–279.
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Trock, D.K. and T.M. Barkley. 1999. Packera subnuda comb. nov., a corrected name for Packera buekii (Asteraceae: Senecioneae). Sida 18: 635.
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Tucker, G. C. 1993. Elatinaceae, In: Hickman, J. C., ed. 1993. The Jepson Manual: Higher Plants of California. Univ. of California Press, Berkeley.
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Tucker, G.C. 1986. The genera of Elatinaceae in the southeastern United States. Journal of the Arnold Arboretum 67: 471-483.
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Turner, B.L. 1956. A cytotaxonomic study of the genus Hymenopappus (Compositae). Rhodora 58: 163-186, 208-242, 250-269, 295-308.
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Turner, B.L. 1987. Taxonomic study of Machaeranthera, sections Machaeranthera and Hesperastrum (Asteraceae). Phytologia 62: 207-266.
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Tutin, T. G., V. H. Heywood, N. A. Burges, D. M. Moore, D. H. Valentine, S. M. Walters and D.A. Webb, eds. 1980. Flora Europaea, Vol. 5, Alismataceae to Orchidaceae (Monocotyledones). Cambridge Univ. Press, Cambridge, UK. 452 p.