LITERATURE CITED
- Froyd, J. D. 1964. Studies of the biology of the Hypoxylon canker of Aspen. (M.S. Thesis, University of Minnesota), pp. 1–39.
- Ingold, C. T. 1933. Spore discharge in the Ascomycetes. I. Pyrenomycetes. New Phytologist 32: 175–196.
- Ingold, C. T. 1960. Spore discharge in Pyrenomycetes. Friesia 6: 148–163.
- Ingold, C. T., and V. J. Cox. 1955. Periodicity of spore discharge in Daldinia. Ann. Bot. N. S., 19: 201–209.
- Ingold, C. T., and V. J. Cox, and V. J. Dring. 1957. An analysis of spore discharge in Sordaria. Ann. Bot., N. S., 21: 465–477.
- Ingold, C. T., and V. J. Cox, and V. J. Dring, and Marshall. 1963. Further observations on light and spore discharge in certain Pyrenomycetes. Ann. Bot. 27: 481–491.
- Kramer, C. L., and S. M. Pady. 1966. A new 24-hour spore sampler. Phytopathology 56: 517–520.
- Pady, S. M., C. L. Kramer, and R. Clary. 1967. Diurnal periodicity in airborne fungi in an orchard. J. Allergy 39: 302–310.
- Walkey, D. G. A., and R. Harvey. 1966. Studies of the ballistics of ascospores. New Phytologist 65: 59–74.