Rader, W.E. 1948: Helminthosporium portulacae a new pathogen of Portulaca oleracea L. Mycologia 40(3): 342-346.
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| Rader, W.E. 1948: Helminthosporium portulacae a new pathogen of Portulaca oleracea L. Mycologia 40(3): 342-346. |