Sterile sorediate crust

The New York Botanical Garden
Lichens of Pennsylvania, U.S.A.
sterile, sorediate
usnic acid
on Betula
Bedford County: Cumberland Valley Township,
Buchanan State Forest, Pleasant Valley, along
Blankley Road, 1.3 mi NE of CR 3011, 39°50’03"N,
78°35’57"W, ca. 400 m; mixed hardwoods on talus
slope.
NEW YORK BOTANICAL GARDEN
17 May 2006
Richard C. Harris 52596
04681016
usnic acid
terpenoid
Determined by R. C. Harris, 2006. No. 19H-
Merck Silica Gel 160 F254 Aluminum Plate
To!uene:dioxane:acetic acid (180:45:15)
04681016