THE LICHEN FLORA OF THE SANTA CRUZ PENINSULA 241 



deep blue with I; spores short ellipsoid, rather blunt, bilocular, 



5 ~ 8.5 



io _ /* A specimen collected by Bolander yields me spores 



6.5 ~ 9 



13 - J 9 ^ 



On rocks above the sea and also in the foothills. Known only 

 from the coast region of California. 



A specimen in the Tuck. Herb., collected by Bolander, No. 150, 

 at San Bruno, has the thallus obsolete. 



3. BUELLIA MYRIOCARPA (DC.) Mudd. 



Patellaria myriocarpa DC. Fl. Fr., Vol. II: 346. 1805. 

 Buellia myriocarpa Mudd, Manual Brit. Lich. 217. 1861. 

 Buellia myriocarpa Tuck. Syn. N. Am. Lich. II: 97. 1888. 



Thallus small, thin, indeterminate, scurfy or forming a compact 

 minutely fissured crust which may pass into minutely rough-warty 

 conditions; greenish or brownish ash-colored and darker; KOH~; 

 CaCl 2 O 2 . 



Apothecia numerous, very small, sessile, black; the disk flat, with 

 a thin, erect, paler margin; soon moderately convex and the margin 

 disappearing; epithecium granulose, brown; paraphyses free, rather 

 slender, their enlarged tips more or less ellipsoid or oblong, the 

 extreme apex often dark; hypothecium dark brown; asci clavate, 



5 7 

 thecium blue with I; spores bilocular, ellipsoid, /*; 



4-8 

 according to Tuckerman, _ ^ /* 



Abundant on the bark of Cupressus and other trees and also occur- 

 ring on stones, in the foothills. Found all over the world. 



4. BUELLIA OIDALEA Tuck. 



Lecidea oidalea Tuck. Proc. Am. Acad. Arts & Sci., Vol. , p. 383. 



1860. 



Buellia oidalea Tuck. Lich. Calif. 26. 1866. 

 Buellia oidalea Tuck. Gen. Lich. 189. 1872. 

 Buellia oidalea Tuck. Syn. N. Am. Lich. II: 99. 1888. 



Thallus suborbiculate to effuse, more or less limited by the black 



