LITERATURE CITED
- Barnett, H. L. 1953. A unisexual male culture of Chalara quercina. Mycologia 45: 450–457.
- Barnett, H. L. 1956. Variation in the oak wilt fungus, Endoconidiophora fagacearum. Proc. West Virginia Acad. Sci. 27: 25–29.
- Brasier, C. M., and J. N. Gibbs. 1975. Highly fertile form of the aggressive strain of Ceratocystis ulmi. Nature 257: 121–131.
- Buisman, Christine J. 1932a. Ceratostomella ulmi, de geslachtelijke vorm van Graphium ulmi Schwarz. Tijdschr. Plantenziekten 38: 1–5. (Phytopathol. Translations 5: 1–8.2)
- Buisman, Christine J. 1932b. Over het voorkomen van Ceratostomella ulmi (Schwarz) Buisman in de natuur. Tijdschr. Plantensiekten 38: 203–204. (Phytopathol. Translations 7: 1–2.2)
- de Hoog, G. S. 1974. The genera Blastobotrys, Sporothrix, Calcarisporium and Calcarisporiella gen. nov. Studies in Mycology 7: 1–84.
- Gibbs, J. N., H. M. Heybroek, and F. W. Holmes. 1972. Aggressive strain of Ceratocystis ulmi in Britian. Nature 236: 121–122.
- Griffin, H. D. 1964. The perithecial state of Ceratocystis ulmi in Ontario. Pl. Dis. Reporter 48: 615.
- Hansen, N. H., and W. C. Snyder. 1943. The dual phenomenon and sex in Hypomyces solani f. cucurbitae. Amer. J. Bot. 30: 419–422.
- Hansen, N. H., and W. C. Snyder. 1952. Inheritance of the sexes and compatibilities in fungi. Phytopathology 42: 479–480.
- Hepting, G. H., E. R. Toole, and J. S. Boyce, Jr. 1952. Sex and compatibility in the oak wilt fungus. Pl. Dis. Reporter 36: 64.
- Holmes, F. W. 1965. Virulence in Ceratocystis ulmi. Netherlands J. Pl. Pathol. 71: 97–112.
- Holmes, F. W. 1970. Formation of perithecia of Ceratocystis ulmi on natural and synthetic nutrient media. Netherlands J. Pl. Pathol. 76: 129–134.
- Holmes, F. W. 1973a. Pathogenicity of old cultures of Ceratocystis ulmi and their ability to mate before and after re-passage through elm trees. Phytopathology 63: 202.
- Holmes, F. W. 1973b. Sequential immersion, an alternative method to adjacent transfer for obtaining perithecia of Ceratocystis ulmi. Internat. Congr. of Pl. Pathol. 2, Abs. of Papers: 0697.
- Holmes, F. W. In press. The casual organism, Ceratocystis ulmi, Chapter 1. In: Proc. Internat. Conf. on Dutch elm disease (Ames, Iowa, Feb. 26, 1968): 13 pages, 63 refs. (Accepted for publication by Iowa State Univ. Press; reprints available from the author.)
- Holmes, F. W., H. M. Heybroek, and J. N. Gibbs. 1972. Aggressiveness in Ceratocystis ulmi. Phytopathology 62: 939–940.
- Hunt, J. 1956. Taxonomy of the genus Ceratocystis. Lloydia 19: 1–58.
- Moreau, C. 1952. Coexistence des formes Thielaviopsis et Graphium chez une souche de Ceratocystis major (van Beyma) nov. comb. Remarques sur les variations des Ceratocystis. Rev. Mycol. 17, Suppl. Colonial No. 1 (No. 12): 17–25.
- Nannfeldt, J. A. 1932. Studien über die Morphologie und Systematik der nichtlichenisierten inoperculaten Discomyceten. Nova Acta Regiae Soc. Sci. Upsol., ser. IV, 8(2): 1–368.
- Schwarz, Marie B. 1922. Das Zweigsterben der Ulmen, Trauerweiden und Pfirschbaume. Meded. Phytopathol. Lab. “Willie Commelin Scholten” 5: 1–74.
- Sekhon, H. S., and M. Singh. 1976. The occurrence of the sexual stage of Ceratocytis ulmi in the Capitol Mall area of Washington, D. C. Pl. Dis. Reporter 60: 572.
- Shafer, Thelma, and O. N. Liming. 1950. Ceratostomella ulmi types in relation to development and identification of perithecia. Phytopathology 40: 1035–1042.
- Snyder, W. C., and H. N. Hansen. 1954. Species concept, genetics and pathogenicity in Hypomyces solani. Phytopathology 44: 338–342.
- Swingle, R. U. 1936. A preliminary note on sexuality in Ceratocystis ulmi. Phytopathology 26: 925–927.
- Webster, R. K. 1967. The inheritance of sexuality, color and colony type in Ceratocystis fimbriata. Mycologia 59: 222–234.
- Webster, R. K., and E. E. Butler. 1967. The origin of self-sterile, cross-fertile strains and culture sterility in Ceratocystis fimbriata. Mycologia 59: 212–221.