LICHENS 
97 
The only specimen in the Tuckerman Herbarium is from the Cascade 
Mountains in Oregon. This specimen is much more delicate, being 
not more than two-thirds as long as the Alaska plants, while the 
apothecia are about half as thick. 
77, Pilophorus cereolus acicularis (Ach.) Tuck. 
Bceomyces acicularis Acharius, Meth. Lich. 328. 1803. 
Pilophorus cereolus acicularis Tuckerman, Suppl. l. 427. 1858-9. 
Broughton Strait (Trelease, 1302); Sitka (Trelease, 1303; Set- 
chell, 12:65) ; Mount Verstovia, Sitka (Coville and Kearney, 929) ; 
Juneau (Coville and Kearney, 584; Setchell, 1245) ; Orca (Trelease, 
1304; Setchell, 1222). Reported by Rothrock 1 as occurring in 
Russian America; collected by Dr. Bean at Sawmill Creek, Sitka; 
by Dr. Cooley at Juneau, 3000 ft. alt., and at Salmon Creek and Gold 
Creek Canyon, near Juneau. 
One additional variety of this genus has been reported from Alaska, 
P. cereolus robustus Tuck., which was collected by Wright on the 
islands of Bering Strait; Macoun collected it “under overhanging 
rocks ” on St. Paul Island. Nylander records its occurrence at Port 
Clarence, under the synonym Pilophoron polycarpum Tuck. 
STEREOCAULON. 
KEY TO THE SPECIES. 
Thallus dwarfed. 
Tomentose, phyllocladia wart-like. tomentosum alpinmn. 
Not tomentose, phyllocladia confluent. denudatum. 
Thallus of good size. 
Slightly tomentose, apothecia subterminal, dilated. paschale. 
Densely white tomentose, apothecia lateral, minute, not dilated. 
tomentosum. 
78. Stereocaulon denudatum Flk. 
Stereocaulon denudatum Floerke, Deutsch. Lich. Anmerk. 4: 13. 1821.— 
Tuckerman, Syn. N. A. L. 1 : 233. 
Unalaska (Setchell); St. Michael (Setchell). 
Dr. Nylander records this species as occurring at Lawrence Bay, on 
the Siberian coast. According to Professor Tuckerman it has been 
collected in Alaska by Dr. Kellogg. Common in Greenland and 
Scandinavia. Reported also from Newfoundland. Pennsylvania is 
the most southern station given in Tuckerman’s North American 
Lichens. 
1 Rothrock, Dr. J. T. Flora of Alaska. Smithsonian Report. 1807. 
