Decades of North American Lichens.

CLARA E. CUMMINGS, T. A. WILLIAMS AND A. B. SEYMOUR.

202. Staurothele diffractella, (Nyl.) Tuck.

But spores smaller and inclined to be fuscescent.

On limestone.

Weeping Water, Nebraska, Nov. 1895.

Coll. Thos. A. Williams.

Yale University Herbarium

YU-235896