122 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
granulose, brown, the color mostly due to the colored heads of the paraphyses; thecium 
64 to 68 » high, colorless; paraphyses laxly coherent; hypothecium fuscous; asc- 
clavate or subinflated-clavate; spores 8, 12 to 17 # long, 5 to 5.5 p thick. 
On smooth bark of Quercus agrifolia in the Santa Monica Range. 
11. Buellia triphragmia (Nyl.). 
Lecidea triphragmia Nyl. Mém. Soc. Sci. Nat. Cherbourg 5: 126. 1857. 
Epithecium subcontinuous, dark brown, gradually paling downward; thecium pale 
yellowish brownish, 84 to 88 » high; paraphyses coherent, slightly clavate at the 
brown tips; hypothecium dark blackish brown; asci inflated-clavate; spores 8, oblong- 
ellipsoid, 19 to 24 u long, 8 to 11 » thick, 4-locular, the immature, colorless spores seen 
to be bilocular, otherwise but few bilocular ones present. 
On bark of Pseudotsuga macrocarpa and dead wood in the San Gabriel Range; Mount 
Wilson, at 1,550 meters altitude. 
12. Buellia oidalea Tuck. 
Thallus pale yellow with a greenish tinge, verruculose-rimose, glaucescent, KHO+ 
greenish yellow, Ca(ClO),—, limited by a black hypothallus; apothecia minute, 0.2 
to 1.75 mm. wide, immersed, later sessile; disk black, soon convex, the at first entire 
proper margin crenulate; epithecium continuous, brown, paling downward; thecium 
colorless, 140 » high, with iodine blue; paraphyses loosely coherent, the tips slightly 
capitate, some forked below the tips, not colored; hypothecium brown like the epithe- 
cium, 100 to 108 » high; asci inflated-clavate, the membrane thickened at upper part 
(20 » thick);. spores ellipsoid and oblong-ellipsoid, varying from 1 to 6 ina spore sack, 
28 to 68 » long, 16 to 24 » thick, muriform, with 7 septa in the transverse diameter and 
several in the longitudinal axis, the spores varying from colorless to gray and finally 
brown. 
On various barks. On bark of the Torrey pine, San Nicolas Island, Trask; bark of 
shrubs, Santa Catalina Island, Trask, Baker; on Adenostoma fasciculatum at Point Loma, 
near San Diego. 
13. Buellia penichra (Tuck.). 
Buellia oidalea penichra Tuck. Syn. N. Amer. Lich. 2: 99. 1888. 
Thallus white, smooth or slightly rugulose, becoming chinky, KHO—, Ca(ClO),—, 
occurring in small patches limited by a black hypothalline border; apothecia sessile, 
0.25 to 1 mm. wide; disk dull black, flat, with a turgid, black, entire, somewhat 
glistening proper margin, later subimmarginate; epithecium subgranulose, brown; 
thecium colorless, 100 » high; paraphyses loosely coherent; hypothecium yellowish 
brown, a little paler than the epithecium; asci inflated-clavate, nearly as high as the 
thecium; spores 6 to 8, bluntly ellipsoid, 14 to 28 #long, 7 to 14 » thick, submuriform, 
with 4 or 5 transverse septa and several in the longtitudinal axis. 
On bark of Pseudotsuga macrocarpa, Mount Wilson, Los Angeles County, at 1,500 
meters altitude. 
14. Buellia halonia (Ach.) Tuck. 
Thallus uniform, greenish yellow, rimose-areolate, the areoles smooth, flat, angular, 
encircled by a black hypothalline border, KHO+ pale yellow, Ca(C1O),-+ orange; 
apothecia black, opaque, sessile; disk flat, at last convex, the margin permanent, con- 
colorous, entire or crenulate-angulose; epithecium subgranulose, brown; thecium 
colorless, 72 4 high; paraphyses loosely coherent, simple, some brown-capitate above; 
hypothecium rather more than half the height of the thecium and a little paler than 
the epithecium, gradually paling upward, horny; asci inflated-clavate, 70 » long, 16 
thick; spores ellipsoid, both ends blunt, bilocular, brown when mature, 18 to 16 long, 
6 to 8 # thick; hymenial gelatine with iodine intense blue; spermogones not seen. 
On calcareous rocks, Santa Catalina Island. 
