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| Milesina laeviscula | Peridermium harknessii | Uredinopsis hashiokai |
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| uredinia | western gall rust | (aecia) on underside of Abies grandis |
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| Melampsora medusae | Puccinia caricina | Melampsoridium betulinum |
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| telia (black) and uredinia (yellow) on the underside of a Populus trichocarpa leaf | aecia and spermagonia on a Ribes leaf | telia |
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| Melampsora medusae | Pucciniastrum goeppertianum | Puccinia caricina |
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| telia | telia in a stem of Vaccinium ovatum | spermagonia |
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| Puccinia porphyrogenita | Uredinopsis sp. | Phragmidium tuberculatum |
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| teliospores on Osmorhiza | hyaline sepate telia (lower center) embedded within a fern leaf | teliospore |
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| Milesina laeviuscula | Ravenella pringlei | Melampsora laricini-populina |
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| urediniospores | teliospore | characteristic paraphyses and urediniospores |
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| Ravenelia pringlei | Melampsorella caryophyllacearum | Melampsorella caryophyllacearum |
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| teliospore | on red fir | an enlargement of the photo to the left |