302 BOTANICAL GAZETTE [OCTOBER 
some indication of the characteristic palmate-digitate type of squamules is 
always to be seen, and this type is never to be found in S. denudatum. 
The most puzzling specimens that I have seen are those collected in New 
Jersey by C. F. Austin. Portions of this material have been examined in the 
Tuckerman Herbarium, the Sprague Collection at the Boston Society of Natural 
History, and the Herbarium of the New York Botanical Gardens. It was 
determined by TucKERMAN as S. denudatum, and is cited in his Synopsis of 
North American Lichens, p. 233; yet it is scarcely typical of this species, and 
it seems much nearer to S. paschale, a view which would be supported by the 
latitude of the station, S. denudatum being essentially an arctic-alpine species. 
According to the description of this species given by Tu. Fries, the apo- 
thecia are minute (i.e. about o.5 mm. in diameter) and lateral. But the speci- 
men collected.by C. C. Frost in Vermont and now in the Sprague Collection 
(BSNH), agreeing in all other particulars with S. denudatum, has terminal 
apothecia, over 1.5 mm. in diameter. 
8. STEREOCAULON Wricuti Tuck. 
S. Wrightii Tuck. Suppl. II to Enum. N. Am. Lich, in Am. Journ. Sci. 
28:202. 1859. 
Stereocladium Wrightit Nyl. Lich. Freti Behr. p. 85. 1888. 
Stereocaulon foliiforme Hue Bull. Soc. Bot. France 54:414. 1907 (see below). 
Podetia 1 to 4 cm. tall, solitary or caespitose, branched above, 
wholly glabrous, denuded below, ending in broad, foliose, convolute 
tips, taking the place of the usual squamules; or -the podetia 
reduced and the expanded portions alone present; apothecia 
unknown; cephalodia doubtful (fig. 3). 
Hitherto this species has been known only from the type collection made 
by Cuartes Wricut at Arakamtchetchene Is. on the Asiatic side of Behring 
Strait, during the U.S. North Pacific Exploring Expedition (1853-1856). 
To this may now be added two other localities, from both of which specimens 
have been distributed under other names. A comparison of these specimens, 
however, with the specimens of S. Wrightii in the Tuckerman Herbarium 
shows that they are undoubtedly this species. These specimens are from St. 
Michael, Alaska, collected by W. A. SETCHELL on the University of Cali- 
fornia Expedition in 1899, and distributed as Stereocaulon denudatum; = 
from Shiribeshi, Japan, collected by ABBE FAuRIE, July 1905, and issued = 
Faurie Lich. Jap. no. 6999 as Stereocaulon foliiforme Hue, n. sp.; 2 authentic 
specimen determined by Hur himself is in the herbarium of W. G. FARLOW- 
Section CHonpRocauton (Leprocaulon Nyl.) 
Primary thallus present or disappearing; podetia reduced, 
simple or branched; squamules granular, dissolving into chalky- 
white powder. 
