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7 records were found.

	Johns, R.M. (1966). Morphological and ecological study of Physoderma dulichii. American Journal of Botany 53 (1): 34-45, 30 figs, 1 map, 2 tables.
	Johns, R.M. (1956). Additions to the phytomycete flora of the Douglas Lake region. III. A new species of Scherffeliomyces. Mycologia 48 (3): 433-438, 12 figs.
	Johns, R.M. (1957). A new species of Physoderma on Dulichium. Mycologia 49 (2): 298-299.
	Johns, R.M. (1964). A new Polyphagus in agar culture. Mycologia 56 (3): 441-451, 6 figs, 2 tables.
	Sparrow, F.K.; Griffin, J.E.; Johns, R.M. (1961). Observations on chytridiaceous parasites of phanerogams. XI. A Physoderma on Agropyron repens. American Journal of Botany 48 (9): 850-858, 23 figs.
	Sparrow, F.K.; Johns, R.M. (1965). Observations on chytridiaceous parasites of phanerogams. XVI. Notes on Physoderma from Scirpeae. Archiv für Mikrobiologie 51 (4): 351-364, 15 figs, 1 table.
	Sparrow, F.K.; Paterson, R.A.; Johns, R.M. (1965). Additions to the phycomycete flora of the Douglas Lake region. V. New or interesting fungi. Papers from the Michigan Academy of Science, Arts and Letters 50 (1): 115-123, 1 fig.