300 BOTANICAL GAZETTE [OCTOBER 
Podetia stout, erect, 1 to 6 cm. tall, more or less densely 
branched, and tomentose; squamules in the form of coarse, crowded, 
conglomerate granules; apothecia (rare) medium to large, lateral 
or terminal; cephalodia of the type of S. tomentosum (q.v.).—Grow- 
ing on exposed soil, especially in arctic-alpine regions. 
SPECIMENS EXAMINED 
Europe: Authentic specimens ex Herb. Laurer (F); Schaer. Lich. Helv. 
no. 263; Massalongo Lich. Ital. no. 11; Anzi Lich. Ital. Suppl. no. 26; Rabenh. 
Lich. Eu. no. 859; Arnold Lich. Exs. 5 no. 6414; Finmark, Th. Fries (Tuck). 
British America: Greenland, Fink (NY); Cumberland Is., Howgate 
Exped. 1877 (Tuck); Diggs Is. Husdon Bay, R. Bell (Can); Labrador, Wag- 
horne no. 20, also no. 21 as S. condensatum sees A. P. Low (Can); Alberta, 
Macoun June 28, 1905 (Can “ 
t. Paul Is., T. C. Kincaid (F); Is. in Behring Strait, C. Wright 
rsh eae agent Dr. Hayes (Tuck); Fred Funston 1894 (CEC); Trelease 
Exped. nos. 1268, 1270, 1298a (CEC); Dall in Harriman Exped. 
no. 1295, as S. tomentosum (CEC). 
MAINE: Eastport, Farlow (H); Portage L. W. Riddle Aug. 1907 (R)- 
New Hampsutre: Mt. Washington, Farlow Sept. 1894 (H). 
Minnesota: B. Fak o no. 93 
OrEGON: Mt. Hood, E. Hall 1871 (Tuc k). 
WasHincton: Mt. Rainier, C. V. Piper 1895 (CEC): Friday Harbor, 
B. Fink June 28, 1906 ( 
This is clearly distinct as a species from S. fomentosum, as the type of 
squamules is a specific criterion throughout the genus. It is most liable to 
confusion with S. denudatum which it resembles in general habit and range, 
but it can be distinguished by the tomentum and the type of cephalodium. 
7. STREOCAULON DENUDATUM Floerke. 
a denudatum Fike. Deutsch. Lich. 4:13. 1819. 
S. glaubescens Tuck. Bost. Journ. Nat. Hist. 3:302. 1840 (according . 
cial specimen). 
Podetia 2 to 4 cm. high, solitary or aggregated, shrubby-erect, 
subsimple below, branching above, wholly glabrous, denuded 
below, squamulose above; squamules crowded, in the typical 
form umbilicate, attached by the center, and with the margin 
crenate (see fig. 9), or often in the form of coarse, rounded, com 
glomerate granules; apothecia rare in North American specimens) 
cephalodia of the type of SS.  Seepas (q.v.). Growing on expo 
rocks or soil (fig. 8). 
