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on Rhododendron, Vaccinium

gall

uredinia hypophyllous, in 5 mm large confluent groups on necrotic spots that are blackish brown at the upper side. Peridia are formed, with a central pore. Urediniospres ± globular, yellow, echinulate, 13-19 x 15-27 µm..

uredinia

Ericaceae, oligophagous

Rhododendron ponticum; Vaccinium corymbosum.

notes

North American species, there a pest in the cultivation of Vaccinium corymbosum; an accidental introduction was observed in Germany in 2011.

references

McTaggart, Geering & Shivas (2013a, 2014a), Rebollar-Alviter, Minnis, Dixon, Castlebury, Ramírez-Mendoza, Silva-Rojas & Valdovinos-Ponce (2011a), Wichura (2016a).

03/10/2016