Genus
Phragmidium
Phragmidium violaceum. Photo: (c) Reiner Richter, some rights reserved (CC BY-NC-SA)
Phragmidium is a genus of rust fungus that typically infects plant species in the Rosaceae. It is characterised by having stalked teliospores borne on telia each having a row of four or more cells. All species have a caeoma which is a diffuse aecidium lacking a peridium.
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