Phyllactinia angulata is a plant pathogen infecting chestnut, beech, oak and elm trees in North America with powdery mildew[3].

Collections on elm were segregated into a new variety, Phyllactinia angulata var.

Reports of this species infecting pistachio[4] are probably instead referrable to Phyllactinia pistaciae, described in 2003[5].

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