LITERATURE CITED
- Ainsworth, G. C. 1971. Ainsworth and Bisby's Dictionary of the fungi. 6th Ed. Commonwealth Mycological Institute, Kew, Surrey, England. 664 p.
- Fennell, D. K. 1973. Plectomycetes; Eurotiales. In: The fungi: an advanced treatise. Eds., G. C. Ainsworth, F. K. Sparrow, and A. S. Sussmann. 4A: 45–68.
- Hackett, K. J. 1980. A study of chalkbrood disease and viral infection of the alfalfa leafcutting bee. Ph.D. Dissertation, Univ. California, Berkeley. 483 p.
- Hall, R. 1973. Electrophoretic protein profiles as criteria in the taxonomy of fungi and algae. Bull. Torrey Bot. Club 100: 253–259.
- Kish, L. P. 1980. Spore germination of Ascosphaera spp. associated with the alfalfa leafcutting bee, Megachile rotundata. J. Invert. Pathol. 36: 125–128.
- Luttrell, E. S. 1955. The ascostromatic Ascomycctcs. Mycologia 47: 511–532.
- Maghrabi, H. A., and L. P. Kish. 1985a. Isozyme characterization of Ascosphaerales associated with bees. I. Ascosphaera apis, A. proliperda and A. aggregata. Mycologia 77: 358–365.
- Maghrabi, H. A., and L. P. Kish. 1985b. Isozyme characterization of Ascosphaerales associated with bees. II. Ascosphaera major, A. atra and A. asterophora. Mycologia 77: 366–372.
- Maghrabi, H. A., and L. P. Kish. 1986. Isozyme characterization of Ascosphaerales associated with bees. III. Bettsia alvei. Mycologia 78: 682–683.
- Nei, M. 1972. Genetic distance between populations. Amer. Naturalist 106: 283–291.
- Prökschl, H. 1953. Beiträge zur Kenntnis der Entwicklungsgeschichte von Pericystis apis Maassen. Arch. f. Mikrobiol. 18: 198–208.
- Skou, J. P. 1972. Ascosphaerales. Friesia 10: 1–24.
- Skou, J. P.. 1975. Two new species of Ascosphaera and notes on the conidial state of Bettsia alvei. Friesia 11: 62–74.
- Skou, J. P.. 1982. Ascosphaera asterophora species nova. Mycotaxon 14: 149–159.
- Sneath, P. H., and R. R. Sokol. 1973. Numerical taxonomy. W. H. Freeman and Co., San Francisco, California. 573 p.
- Spiltoir, C. F. 1955. Life cycle of Ascosphaera apis (Pericystis apis). Amer. J. Bot. 42: 501–508.
- Stejskal, M. 1974. Arrhenosphaera cranei, gen. et sp. nov. a bee-hive fungus found in Venezuela. J. Apic. Res. 13: 39–45.
- Stephen, W. P., J. D. Vandenberg, and B. L. Fichter. 1981. Etiology and epizootiology of chalkbrood in the alfalfa leafcutting bee, Megachile rotundata, with notes on Ascosphaera species. Oregon State Univ. Agr. Exp. Sta. Bull. No. 653, Corvallis.
- Varitchak, B. 1933. L'évolution nucléaire dans le sac sporifére de Pericystis apis Maassen et sa signification pour la phylogénie des Ascomycètes. Le Botanistein. 343–391.