120 HERRE 



range across the Santa Clara Valley, it occurs in Alum Rock Park 

 near San Jose at about 300 feet above sea level. I have also col- 

 lected it in the Sierra Nevada Mountains, at Verdi, Nevada, at an 

 elevation of 4900 feet. Usually abundant wherever found. 



My largest specimens from the Santa Cruz peninsula have a diam- 

 eter of somewhat more than two inches. This lichen seems to 

 reach a greater thaUine development in the drier Inner Coast Range 

 than in the Santa Cruz Mountains. A specimen in the Tuckerman 

 Herbarium from Mt. Diablo has a diameter of 3 inches, while I have 

 collected specimens on Mt. Santa Ana with a breadth of 4 inches. 



Ranging from Vancouver Island on the north to Guadalupe Island 

 in Lower California, a specimen from the latter locality, collected 

 by Dr. Edward Palmer, being in the Tuckerman Herbarium. 



3. GYROPHORA POLYRRHIZA (L.) Korb. 



Lichen polyrrhizos Linne, Sp. Plant. 2: 1151. 1753. 



Gyrophora polyrrhiza Korber, Par. Lich. 41. 1859. 



Gyrophora diabolica A. Zahlbr. in Herre, Proc. Wash. Acad. Sci. 7 : 



366. 1906. 



Thallus small to medium, one-leaved becoming many-leaved 

 and complicate; more or less orbicular, the edges torn or irregular; 

 coriaceous, rigid, usually smooth and polished; color a very dark 

 rich brown, becoming olive when moist; beneath black, granulate, 

 more or less covered with short, dense, black fibrils. 



Fertile plants infrequent; apothecia at first innate, and very 

 small, but finally large, rounded, or irregularly oblong, prominent 

 and dome-like, reaching a diameter of 8 mm.; beautifully gyrose- 



plicate, black; spores simple, colorless, short ellipsoid, 



Abundant on high sandstone cliffs in Devil's Canon, at an alti- 

 tude of 2000-2300 feet; mingled with G. ph&a and G. polyphylla, 

 but from its greater size and abundance forming the dominant tone 

 of the rock lichen flora. A few specimens also found on Castle Rock, 

 altitude 3000 feet. Abundant in the Yosemite Valley, according 

 to Dr. Hasse. Recorded from Northern Europe and Asia; not 

 given by Tuckerman in his lists of North American species. 



I have compared my specimens with authentic fruiting material 

 from Th. Fries in the Imperial Museum at Vienna, and in the Brit- 



