Yale University Herbarium

YU.238741

LICHENES AMERICANI EXSICCATI

Collected and published by M. E. Hale

No. 15. PARMELIA ANDREANA Muell. Arg.

Cf. R. Santesson, Ark. f. Bot. 31: 19. 1944.

On *Pinus ponderosa* and *Pseudotsuga taxifolia*.

Colorado: near Palmer Lake, El Paso Co. July 1954.

Chemical contents: lecanoric and usnic acids.