— 8o — 



Rhizocarpon petraeum (Wulf.) A. Zahlbr. Hardly agreeing with typical 

 form but not belonging elsewhere. Sumas Mt., at 2500 feet. 



Rhizocarpon geminatum (Elot.) Koerber. With R. geographicum; spores 

 13-22 by 21-40^1. 



Rhizocarpon geographicum (L.) DC. At 5500 feet and above on Mt. 

 Baker. 



Baeomyces byssoides (L.) Schwer. Common on old stumps, logs, and 

 on earth, in the wooded lowlands. 



Stereocaulon paschale var. conglomeratum Fries. Not rare on the 

 slopes of Mt. Baker, especially above the snow line. We may have two or more 

 species but the material is too depauperate to place with certainty. 



Thamnolia vermicularis (Sw.) Ach. Abundant on exposed patches of 

 soil amid the snow fields of Mt. Baker at 6000 feet and above. 



Cladonia rangiferina (L.) Web. Rare; on Mt. Baker, 4500 feet. 



Cladonia sylvatica (L.) Hoffm. Rare; Mt. Baker, at about 5000 feet. 



Cladonia bellidiflora (Ach.) Schaer. On rocks, Mt. Baker, 4500 feet. 



Cladonia macilenta Hoffm. Occasional on rotten logs and stumps through- 

 out, at least to an elevation of 4000 feet. 



Cladonia bacillaris (Del.) Nyl. On rotten logs in the lowlands and 

 foothills. 



Cladonia cristatella Tuck. On Mt. Baker at 5000 feet. 

 Cladonia verticillata Hoffm. var. evoluta Th. Fr. On rotten logs 

 in the foothills. 



Cladonia squamosa (Scop.) Hoffm. On rotten logs in lowland and foot- 

 hills. 



Cladonia gracilis dilacerata Floerke. This, and several other varieties, 

 occur on mossy logs in the forested lowlands. 



Cladonia pyxidata (L.) Fr. Common in the lowlands on mossy logs and 

 stumps. 



Cladonia furcata racemosa Floerke. On Lummi Island and probably 

 throughout the mainland of the county. 



While we have a number of species of Cladonia they are not specially con- 

 spicuous. The above list will be readily added to when they are further collected. 



Pilophoron cereolus Hallii Tuck. Common on rocks, especially among 

 mosses on the under side of overhanging ledges; Sumas Mt., 2500 feet, and Mt. 

 Baker at 4500 feet. 



Pilophoron cereolus acicularis (Ach.) Tuck. Common on Mt. Baker 

 at from 4000 to 5000 feet. 



The Gyrophora group is not particularly well developed or represented here 

 in my collections as yet. All my trips on Mt. Baker have been on the north or 

 northwest side and I have no doubt that further investigation on the southward 

 slopes will reveal a number of other species as well as a more abundant gi;owth 

 of the species here indicated. The five here listed are all from Mt. Baker at 

 6000 feet (the glacier line on the northwest) and above. 



Gyrophora cylindrica (L.) Ach. 



