262 HERRE 



fibrils; color above varying from greenish or pearly gray to pale 

 dingy brown; under surface channelled, very white; white powdery; 

 KOH-. 



Sterile with us and rarely fruiting anywhere. 



Found in some abundance in Pilarcitos Creek Canon, growing on 

 high clay banks and on earth in crevices of sandstone cliffs. On 

 earth at Santa Cruz, herbarium of Dr. C. L. Anderson; on clay banks 

 on San Juan Hill, elevation about 1000 feet; on Quercus agrifolia, 

 Oakland Canon, Bolander in Tuckerman Herbarium. Recorded by 

 Dr. Hasse from Catalina Island, southern CaHfornia. A cosmo- 

 politan lichen. 



3. ANAPTYCHIA CILIARIS (L.) Mass. 



ZicA^w a'/jam Linne, Sp. Plant. 2 : 1144. 1753. 



Anaptychia ciliaris Massalongo, Mem. Lichenograf. 35. 1853. 



Physcia cilaris Tuck. Syn. N. Am. Lich. I: 71. 1882. 



Thallus loosely tufted, orbiculate or more often in diffuse clumps; 

 spreading and decumbent, or slightly ascendant ; gray to green-gray ; 

 rarely darkening to brownish; yellow with KOH. 



The narrow and elongate lobes wider and shorter than those of 

 A. leucomela, intricately intertangled, many-cleft; their margins 

 beset with brownish or blackening fibrils, mostly simple, but becom- 

 ing branched; beneath channelled, white to greenish, usually covered 

 with a greenish powder. 



Sterile with us. 



Abundant on Quercus agrifolia in the hills immediately back of 

 Santa Cruz. 



A common and variable Uchen of the temperate regions of the 

 northern hemisphere, usually on bark, more rarely on rocks. 



Anaptychia comosa (Esch.) Trevis., has been collected once by 

 Dr. Hasse in the Santa Monica Range and may be expected here. 

 It is near leucomela and ciliaris, but may be distinguished by the 

 much shorter lobes, thickly beset along their margins and upper 

 surface with long white or concolorous fibrils, which give the plant a 

 fuzzy, cottony appearance. 



