19] S Herre; on Alaska Lichens 281 



Following is a list of the species determined, together with the lo- 

 calities where they were collected: — 



1. — Verrucaria maura Wahlenb. — Deweyville; Wrangell; St. John's 

 Harbor, Zarenibo Island; Howkan Baj^; Heceta Island. 



2. — Verrucaria muralis Ach. — A variety of the species, with spores 

 .smaller than the type, 6-8 by 11 to 19 mikrons. Calder quarry, Prince 

 of Wales Island. 



3. — Verrucaria fulva Cummings — This species was found by the Har- 

 riman expedition at Port Wells only. Apparently common among the 

 islands and to be looked for south at least as far as Vancouver Island. 

 Our specimens are from Dall Island, Brownson Bay, and Nichols Bay. 



4.- — Dermalocarpon miniatum (L.) Mann var. complicatum (Sw.) Th. 

 Fr. — How^kan Bay. New to Alaska. 



5. — Calicium curUim Turn, and Borr. — Howkan Bay. New to Alaska. 



6. — Calicium hyperellum Ach. — Zarenibo Island. New to Alaska. 

 Members of the Caliciaceae are so readily overlooked that is it probable 

 several other species occur. They should be looked for especially on the 

 trunks of rough-barked trees and on the dead limbs of trees. 



7. — Sphaerophorus glohosus (Huds.) Herre — Abundant; Kosciusko 

 Island; Dall Island; Heceta Island; Brownson Bay; Nichols Bay; Saltery 

 Cove; Ratz Harbor. 



8. Arthonia cinero-fusca Merrill — Spores 5-locular, larger at one 

 end, 6.8 by 16.5 mikrons. Occuring on rocks touched by the ocean waves 

 at St. John's Harbor, Zarembo Island. New to Alaska. 



9. — Arthonia punctiformis Ach. — Our material is nearest to this spe- 

 cies, the spores being 6— locular, 6.8 to 10 by 19 to 23.5 mikrons. On 

 Alnus, at Augustine Bay, Dall Island. 



10. — Xylographa opegraphella Nyl. — No spores were found but the 

 material is very close to this; found on Zarembo Island. 



11. — Opegrapha saxicola Ach. — On rocks in the bay at Deweyville, 

 Prince of Wales Island ; not previously reported from Alaska. 



12. — Graphis scripta (L) Ach. — Common on bark of Alnus; Egg 

 Harbor, Coronation Island; Shi))ley Bay; Kosciusko Island. 



13. — Thelolrema lepadinum Ach. — This widespread lichen, found on 

 Alnus sinuata at Kell Bay, Kuiu Island, seems not to have been reported 

 from Alaska heretofore. 



14. — Lecidea flexuosa (Fr.) Nyl. — Our specimens are nearest this 

 species, which has not been collected in Alaska before. The material was 

 found on slate rock at W^rangell ; spores measure 3 to 4 by 9 to 1 1 mikrons. 



15. — Lecidea silacea Ach var. oxydata Fr. — On rocks in the bav at 

 Deweyville, Prince of Wales Island; new to Alaska. 



