Sterile sorediate crust

The New York Botanical Garden
LICHENS OF ILLINOIS, U.S.A.
sterile, sorediate
usnic acid, terpenoids
on Quercus
Jackson County: Shawnee National Forest, Pomona
Natural Bridge, ca. 8 mi S of Murphysboro, ca.
37°38’N, 89°20’W; b'eech-maple woods with
sandstone outcrops.
NEW YORK BOTANICAL GARDEN
15 October 1993
Richard C. Harris 31295
0468-
017
terpenoid
usnic acid
Determined by R. C. Harris, 1997. No. 1543-10
Merck Kieselgel 60 F254
Toluene:dioxane:acetic acid (180:45:5)
04681017