Two new species of resinicolous Chaenathecopsis (Mycocaliciaceae) from western North America

Chaenothecopsis sitchensis and Chaenothecopsis tsugae (Ascomycota, Mycocali ciaceae) are described as new from western North America. Both species grow on conifer resin in wet temperate forests. While they have so far only bee n collected from Oregon, they may have wide distributions in the Pacific No rthwest. Both species occur irt specialized microhabitats and can be diffic ult to find.