Arthonia patellulata Nyl.

The New York Botanical Garden
Lichens of Nova Scotia, Canada
Arthonia patellulata Nyl.
+ A. caesia (Flotow) Körber 
Queens County: Kejimkujik National Park, along E
shore of Kejimkujik Lake near inlet from Grafton
Lake, 44°23’N, 65°12’W; mixed hardwood-conifer
forest.
9 May 1999
Richard C. Harris 43111 -B
on old Acer rubrum
01364607
Collected on the 8th Tuckerman Workshop