298 BOTANICAL GAZETTE [ocTOBER 
The relationship of S. tomeniosum to S. paschale is sufficiently discussed 
under the latter species, to which reference may be made. The palmate- 
digitate type of squamules will serve to distinguish these species from others 
having the same habit, including S. alpinum, our only other species with typi- 
cally tomentose podetia. ; 
Certain material has been examined from our northwest coast, especially 
from the Cascade Mts., Oregon, which seemed at first to be distinct from 
S. tomentosum (fig. 2). These specimens are unusually large and finely 
developed, with large apothecia, and bearing conspicuous white structures 
which at first appeared to be a new type of cephalodium. Examination of 
these structures failed to show any type of alga other than the Cystococcus, 
which forms the normal gonidia for the genus, and the structures cannot 
therefore be considered cephalodia. After careful study I am unable to look 
upon this Oregon material as anything more than exceptionally luxuriant 
S. tomentosum. eae 
It is otherwise, however, with another form of S. tomentosum, which is 
undoubtedly of varietal rank and may be designated 
5a. STEREOCAULON TOMENTOSUM var. simplex, var. NOV. 
Podetia 6-9 cm. alta, erecta, simplicia vel subsimplicia; squa- 
mulae paucae et dispersae; tomentum et apothecia et cephalodia ut 
in forma typica.—Habitat in locis arenosis. 
Podetia 6-9 cm., tall, erect, simple or nearly so; squamules few 
and scattered; tomentum, apothecia, and cephalodia as 1n the 
type-—Growing in bare sandy soil (fig. 4). | 
Type specimens: “On sandy river bottom, Mt. Rainier region, Washing- 
ton,” collected by T. C. Frye, Aug. 14, 1904, in Herb. L. W. Riddle. 
Co-type specimens: in Herb. Fink and Herb. Wellesley College. 
SPECIMENS EXAMINED 
OREGON: Cascade Mts., Moses Craig Aug. 1898 (CEC), 4- 5, fm 
June 20, 1907 (R). ; 
WaAsHINGTON: Mt. Rainier region T. C. Frye Aug. 15, 1904 (R); Ome” 
Mts., T. C. Frye Aug. 7, 1907 (R). 
British Coumpra: Salt Spring Is. Gulf of Georgia, Macoun May % 
1887 (Can). 
AtasKA: Davidson Glacier, Grace E. Cooley Aug. 15, 1891 (CEC). d 
This variety is very striking and distinct, and can scarcely be confuse 
with any other North American form. 
6. STEREOCAULON ALPINUM Laurer. 
S. alpinum Laurer in Fries Lich. Eu. p. 204. 1831. aul 
S. tomentosum var. alpinum (Laur.) Th. Fr. Comm. Ster. p- 3° 1857) 
American authors. 
