292 BOTANICAL GAZETTE [OCTOBER 
Marne: Eastport, Farlow (H); West Pembroke, Maude C. Wiegand 
Aug. 11, 1909 (W); Mt. Katahdin, J. F. Collins in Herb.; Mt. Desert is; 
M. L. Wilson (Mt. a 
New Hampsuire: White Mts., Tuckerman Lich. Exs. no. 94; E. Faxon, 
as S. denudatum (CEC); Clara E. Cummings we Farlow (H). 
V. 
A beautiful species, entirely distinct from all others of the boreal group in 
the coralline or fibrillose squamules (fig. 8), clearly separating it from S. paschale 
and S. tomentosum, which it resembles in habit. though much the rarest 
of the three species, it is nevertheless rather remarkable that no specimens have 
been seen from the central or western parts of the United States. 
4. STEREOCAULON PASCHALE (L.) Ach. 
Lichen paschalis Linnaeus ~ Pi. 2:1153. 1753 (cf. WAINIO Revisio lichenum 
in herbario Linneai asservatorum in Medd. Soc. F. et Fl. Fenn. 14:1. 1886). 
Stereocaulon paschale Acar Meth. Lich. p. 315. 1803, in part (ct. 
Tu. Fries Monog. Ster. 
Stereocaulon paschale sk ‘aid in Lich. Eu. p. 202. 1831. 
Podetia 3 to 9 cm. high (average 6 cm.), caespitose, lax, spreac- 
ing, procumbent, or rarely erect, more or less intricately branched 
throughout, glabrous or somewhat tomentose; squamules palmate- 
digitate, or margin crenate, or, on upper part of podetia, granulate, 
never coralline; apothecia o. 5 to 4 mm. in diameter, average I mm., 
terminal or terminal and lateral; cephalodia typically conspicuous, 
gray, spherical, rugose-plicate, containing Stigonema, sometimes 
fibrillose and black.—Growing on rocks, rarely on the earth. 
SPECIMENS EXAMINED 
Europe: Stenh. Lich. Suec. no. 80; Sweden, Th. Fries 1854, and Tucker- 
man 1842 (Tuck). 
British America: Labrador, A. P. Low July 1806 (Can); Waghorne, 
Aug. 1891 (NY); Quebec, Gaspe County, J. F. Collins July 19, 1906 ®); 
New Brunswick, G. U. Hay July 1884 (Can); Nova Scotia, Mackay (BSNH); 
tario, many localities, Macoun (Can); Lake Superior, Macoun Canad. 
Lich. no. 45; Alberta, H. L. Bolley Aug. 1901 (F); British Columbia, Macoun 
Can). 
Ataska: J. M. Macoun 1892 (Can); Sheep Creek near Juneau, Grace E. 
Cooley Aug. 5, 1891, as S. tomentosum (CEC); Muir Glacier, Trelease June 9; 
1899, Harriman Exped. no. 1299, as S. tomentosum (CEC); Port Cla en > 
eae ee Sete ena sR it i eu Sect eg 
