Riley, E.A. 1952: Leaf spot of parsnip caused by Phleospora crescentium (Barth.) n. comb. Mycologia 44(2): 213-215.
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| Riley, E.A. 1952: Leaf spot of parsnip caused by Phleospora crescentium (Barth.) n. comb. Mycologia 44(2): 213-215. |