58 HERRE 



I; spores simple, globose to ellipsoid, arranged in a straight row in the 



99! 

 asci, dusky when mature, 



9t ~ 



On the thallus of Pertusaria pustulata, growing on the bark of 

 Quercus agrifolia, at Santa Cruz. As yet not seen elsewhere. Oc- 

 curring on the thallus of various Pertusarias in Europe and North 

 America. 



The name given by Massalongo must supersede that of Tulasne, 

 since the name microcephala had already been applied to a member 

 of the same genus by Smith, Eng. Bot. 5- 138 (1795?) and Turner 

 and Borrer, Lich. Brit. 130. 1839. 



CYPHELIACEJE. 



But one genus occurs with us, with characters as follows: 



X. Cyphelium Th. Fr. 



Cyphelium Th. Fries, Gen. Heter. Europ. 100. 1861. 



Thallus warty-crustaceous or smooth, uniform or radiately lobed 

 at the circumference. Apothecia innate to elevated-sessile, hemis- 

 pherical or globose, at first closed, at last open and often crateriform. 

 Proper margin varying from a mere trace beneath the hymenium to 

 well developed, when it may be accompanied by a thalline margin. 

 Paraphyses few, thread-like; spores in a single row, in our species 

 simple or bilocular. 



Usually occurring on dead wood, the bark of large old trees, rarely 

 on stone. 



KEY TO THE SPECIES. 



Section Cypheliopsis A. Zahlbr. 



Spores simple, more or less globose ....... . .......... i. bolanderi 



Section Eucyphelium A. Zahlbr. 



Spores bilocular, usually constricted at the middle. 

 A. Thallus uniform. 



B. Thallus yellow or greenish yellow ............... 2. tigillare 



BB. Thallus white or whitish ...................... 3. inquinans 



AA. Thallus marginally lobed. 



C. On rocks. 



D. Thallus thick; spores large ................... 4. californicum 



DD. Thallus rather thin; spores small or medium ..... 5. farlowi 



CC. On dead wood. 



E. Thallus thick; whitish or ashy; KOH ........ 6. occidentalis 



EE. Thallus brownish yellow; KOH decided yellow . . 7. andersoni 



