LITERATURE CITED
- Barr, M. E. 1972. Preliminary studies on the Dothideales in temperate North America. Contr. Univ. Michigan Herb. 9(8): 523–638.
- Bertoldi, M. de, A. A. Lepidi, and M. P. Nuti. 1973. Significance of DNA base composition in classification of Humicola and related genera. Trans. Brit. Mycol. Soc. 60: 77–85.
- Brooks, F. T. 1953. Plant diseases. 2nd Ed. Oxford Univ. Press, London. 457 p.
- Campbell, R. N., and R. G. Grogan. 1963. Big-vein of lettuce and its transmission by Olpidium brassicae. Phytopathology 53: 252–259.
- Dilcher, D. L. 1965. Epiphyllous fungi from Eocene deposits in western Tennessee, U.S.A. Palaeontographica, Abt. B, Paläophytol. 116: 1–54.
- Hess, W. M. 1969. Ultrastructure of onion roots infected with Pyrenochaeta terrestris, a fungus parasite. Amer. J. Bot. 56: 832–845.
- Holm, L. 1961. Some viewpoints on the evolution of the Ustilaginales. Svensk Bot. Tidskr. 55: 587–590.
- Kazama, F., and M. S. Fuller. 1970. Ultrastructure of Porphyra perforata infected with Pythium marinum, a marine fungus. Canad. J. Bot. 48: 2103–2108.
- Leppik, E. E. 1965. Some viewpoints on the phylogeny of rust fungi. V. Evolution of biological specialization. Mycologia 57: 6–22.
- Luttrell, E. S. 1946. Black rot of muscadine grapes. Phytopathology 36: 905–924.
- Menzies, J. C. 1963. Survival of microbial plant pathogens in soil. Bot. Rev. 29: 79–122.
- Münch, E. 1929. Ueber einige Grundbegriffe der Phytopathologie. Z. Pflanzenkrankh. 39: 276–286.
- Park, D. 1968. The ecology of terrestrial fungi, pp. 5–39. In G. C. Ainsworth and A. S. Sussman [ed.], The fungi. Vol. III. The fungal population. Academic Press, New York.
- Savile, D. B. O. 1968. Possible interrelationships between fungal groups, pp. 649–675. In G. C. Ainsworth and A. S. Sussman [ed.], The fungi. Vol. III. The fungal population. Academic Press, New York.
- Smith, N. J. G. 1929. Observations of the Helminthosporium diseases of cereals in Britain. 1. The behavior of Helminthosporium gramineum in a common barley disease. Ann. Appl. Biol. 16: 236–260.
- Temmink, J. H. M., and R. N. Campbell. 1969. The ultrastructure of Olpidium brassicae. III. Infection of host roots. Canad. J. Bot. 47: 421–424.
- Trappe, J. M. 1971. Mycorrhizae-forming Ascomycetes, pp. 19–37. In E. Hacskaylo [ed.], Mycorrhisae. U. S. D. A. Misc. Publ. 1189.
- Wahl, A. C. 1970. Chemistry by Computer. Sei. Amer. 222: 54–58, 60, 62–65, 68–70.
- Wellman, F. L. 1972. Tropical American plant disease. Scarecrow Press, Metuchen, New Jersey. 989 p.
- Wood, R. K. S. 1967. Physiological plant pathology. Blackwell Scientific Publications, London. 570 p.
- Zuck, R. A. 1953. Alternation of generations and the mode of nutrition. Drew Univ. Bull. 41(3): 1–19.