| SCIENTIFIC NAME: | CUMMINSIELLA MIRABILISSIMA |
| VERNACULAR NAME: | MAHONIA RUST |
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| Fig 1 |
| DESCRIPTION | Quite a common species that causes unsightly patches of purple, yellow and black on various Mahonia species. On the underside can be found several brown powdery pustules. |
| SPORES | Clavate to spheropedunculate, with punctate walls. |
| HABITAT | On leaves of various Mahonia species. |
| SEASON | Common. Can be seen all year round. |