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273 LITERATURE CITED Bartlett, H. H. 1951. Regression of Quercus X deamii toward Quercus macrocarpa and Quercus muehlenbergii. Rhodora 53:249-64. Cronquist, A. 1968. The evolution and classification of flowering plants. Boston: Houghton Mifflin Co. 1,262 pp. ---. 1981. An integrated system of classification of flowering plants. New York: Columbia Univ. Press. 1,262 pp. Dyal, S. C. 1936. A key to the species of oaks of eastern North America based on foliage and twig characters. Rhodora 38:53-63. Engelmann, G. 1877. About the oaks of the United States. Trans. St. Louis Acad. Sci. 3:385-400. Gleason, H. A. 1952. Change of name for certain plants of the "manual range." Phytologia 4:20-25. Hardin, J. W. 1976. Terminology and classification of Quercus trichomes. Journal of the Elisha Mitchell Scientific Society 92:151-61. ---. 1979. Quercus prinus L.-nomen ambiguum. Taxon 28:355-57. Hutchinson, J. 1959. The families of flowering plants. 2nd ed. Oxford: Clarendon Press. 968 pp. Jensen, R. J. 1977. Numerical analysis of the scarlet oak complex (Quercus subgen. Erythrobalanus) in the eastern United States: Relationships above the species level. Systematic Botany 2:122-33. Jones, G. N., G. D. Fuller, G. S. Winterringer, H. E. Ahles, & A. Flynn. 1955. Vascular plants ofIllinois. Urbana: Univ. ofIllinois Press. 593 pp. Love, A., & D. LOve. 1956. Chromosomes and taxonomy of eastern North American Polygonum. Canadian Journal of Botany 34:501-21. Miller, R. B., & L. R. Tehon. 1926. Native and naturalized trees of Illinois. Bulletin of the Illinois Natural History Survey 18:1-337. Mohlenbrock, R. H. 1975. Guide to the vascular flora of Illinois. Carbondale : Southern Illinois Univ. Press. 494. pp. ---. 1986. Guide to the vascular flora of Illinois. Revised and enlarged edition. Carbondale: Southern Illinois Univ. Press. 508 pp. Nuttall, T. 1818. The genera of North American plants. Philadelphia: Reartt. 566 pp. Palmer, E. J. 1942. The red oak complex in the United States. American Midland Naturalist 27:732-40. ---. 1948. Hybrid oaks of North America. Journal of the Arnold Arboretum 29:1-48. 274 / literature cited Sargent, C. S. 1918. Notes on North American trees. I. Quercu.s. Botanical Gazette 65:423. Shinners, L. H. 1967. Species of Bilderdykia (Tiniaria, Polygonum in part) transferred to Reynoutria (Polygonaceae). Sida 3:117-18. Steyermark, J. A. 1963. Flora of Missouri. Ames: Iowa State Univ. Press. 1,728 pp. Swink, F. 1974. Plants of the Chicago region. 2nd ed. Lisle, Ill.: Morton Arboretum. 474 pp. Swink, F., & G. Wilhelm. 1979. Plants of the Chicago region. Lisle, Ill.: Morton Arboretum. 922 pp. Thomson, P. M. 1978. The Quercus prinoides WilJd. complex in the central states. Ph.D. diss., Southern Illinois Univ., Carbondale. 145 pp. Thomson, P. M., & R. C. Anderson. 1976. An ecological investigation of the oakwood bottoms greentree reservoir in Illinois. Proceedings of the First Central States Hardwood Conference. Carbondale, Ill. Thomson, P. M., & R. H. Mohlenbrock. 1979. Foliar trichomes ofQuercus subg. Quercus in the eastern United States. Journal of the Arnold Arboretum 60:350-66. Thorne, R. F. 1968. Synopsis of a putatively phylogenetic classification of the flowering plants. Aliso 6:57-66. Trelease, W. 1924. The American oaks. Memoirs of the Natural Academy of Science 20:1-256. Willdenow, K. L. 1805. Species plantarum. 4th ed. Bedin: G. C. Nauck. 1,157 pp. ...

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