Phragmidium montivagum Arthur 1909

Phragmidium montivagum Arth. Torreya 9 : 24. 1909
Pycnia amphigenous, gregarious and often confluent, in small groups surrounded by aecia or on spots opposite the aecia, inconspicuous, subcuticular, extending into the lateral walls of the epidermal cells, pale honey-yellow, discoidal, low, 80-112 /£ in diameter by 30-35 /^ high.