THE LICHEN FLORA OF THE SANTA CRUZ PENINSULA 85 



Apothecia sessile, becoming large, i to 2 mm. wide, circular, 

 numerous, often crowded, and then irregular or distorted; disk 

 black, usually with a white or gray bloom; at first moderately con- 

 vex, with a turgid and lighter colored margin, becoming subglobular, 

 the margin persistent and in larger apothecia sinuate or distorted; 

 ep'thecium granulose, brown; paraphyses conglutinated ; hymenium 

 colorless to light brownish, deep blue with I, 80 to 100 /* high; 



5-6 



hypothecium very dark brown; spores oblong ellipsoid, /*. 



12 14 



8 

 and - fJL. Spermatia not seen. 



On sandstone at Grizzly Peak, at an altitude of 2700 feet. Here- 

 tofore known only from Southern California, where it was discovered 

 by Dr. Hasse. 



10. LECIDEA GRISELLA (Elk.) Nyl. 



Lecidea fumosa var. grisella Floerke, in litt. 



Lecidea fumosa var. grisella Schaerer, Enum. Crit. Lich. Europ.. 



no. 1850. 

 Lecidea grisella Nylander, Lich. Lapp. Or. 160. 1867. 



Thallus indeterminate, of minute, then scattered or barely con- 

 tiguous areoles, plane or moderately convex, dull ashy gray or dusky 

 gray in color; KOH- or faintly yellowish; CaCl202 red. 



Apothecia small to medium, numerous, innate-sessile, closely 

 appressed, black; the disk plane or soon moderately convex, bordered 

 by a thin entire margin, which becomes angulose and is long per- 

 sistent, finally disappearing; epithecium dark brown; paraphyses 

 conglutinate, thecium deep blue with I; hypothecium blackish 

 brown, broad; spores not observable in my specimens, the asci 



poorly developed or their contents not differentiated; - - // 



11-15 



according to Hue. 



On rocks in the foothills near Stanford University. A European 

 lichen apparently not distinguished by American authors. 



