HASSE—LICHEN FLORA OF SOUTHERN CALIFORNIA. 93 
8 to 11 » long, 4 to 7 » thick; hymenial gelatine with iodine blue, the hypothecium 
light blue, the final change of blue to ‘‘sordid yellow,’”’ ! not observed. 
On dead wood near San Bernardino, Parish (determination of Doctor Stizenberger). 
On the same substrate near Los Gatos, Herre; on living bark of oak in the Santa Monica 
Range. 
18a. Lecanora symmicta saepincola (Ach.) Nyl. 
Thallus pulverulent, almost disappearing, the chemical reactions of the species not 
apparent; apothecia sessile; disk flat, grayish flesh-colored to dull blackish with a 
very thin, finely crenulate thalline margin; epithecium subcontinuous to continuous 
brown, paling toward the periphery; thecium 48 to 56 » high, almost colorless, pale 
brown in the center; paraphyses coherent; hypothecium a little darker than the 
epithecium; asciclavate; spores ovoid-ellipsoid, 8 to 10 » long, 4 to 5 # thick; hymenial 
gelatine with iodine deep blue. 
On dead pine limbs, Strawberry Valley, San Jacinto Mountains, at 1,300 meters; 
on decaying wood and dead oak bark in the Tehachapi Mountains at about the same 
altitude. 
19. Lecanora phaeobola Tuck. 
Thallus of small light brown to brown papille, roundish or crenulate, KHO—, 
Ca(C1O),—; apothecia closely sessile, small, 0.25 to 0.5 mm. wide; disk flat, dark brown 
to blackish with a thin concolorous margin, this finally obsolete; epithecium subcon- 
tinuous, grayish brown; thecium 64 to 68 » high, colorless; paraphyses subcoherent, the 
tips clavate and light brown, some furcate under the apices; hypothecium pale brown; 
asci clavate; spores 8, oblong-ellipsoid, 10 to 18 » long, 4 to 5 y thick. 
On dead Pinus lambertiana in the Sierra Nevada near Wauwona, at 1,400 meters 
altitude. 
20. Lecanora saxicola (Poll.) Ach. 
Thallus adpressed, pale greenish yellow, glaucous to yellowish brown (especially 
becoming so in the herbarium), forming round patches, rimose-areolate in the center, 
radiately spreading and lobed at the periphery, the contiguous lobes there flattened, 
dilated and crenate at the border; apothecia sessilc, crowded at the center; disk flat, 
concolorous with the thallus, more yellowish; thalline margin persistent, entire to cre- 
nulate, regular or contorted; epithecium continuous, sordid pale yellowish; thecium 
52 to 72 » high, colorless; paraphyses strict, capillary, subcoherent, septate, the apices 
not or but slightly thickened; hypothecium sordid pale yellowish; asci inflated- 
clavate, equaling the thecium in height; spores 8, oblong-ellipsoid, 11 to 16 y long, 
6 to 7 » thick; hymenial gelatine blue with iodine; sterigma simple, straight; sper- 
matia acicular, arcuate. 
Common on various rocks, from the lowlands ascending the higher mountains. San 
Bernardino Mountains, Parish; near Riverside, Reed; frequent in the Santa Monica 
Range. 
The species varies somewhat and the following forms are found: The variety diffracta 
Fries has the thallus darker, light yellowish brown, the areoles more diffract and black 
‘margined. At Mount Wilson, San Gabriel Range. The variety semitensis Tuck. with 
the thallus reduced to smaller, scattered, dusky yellowish squamules may yet be found 
‘in the higher mountains of our territory. The variety versicolor Fries has the thallus 
‘pale, white pruinose and depressed at the periphery, the thalline margin white pulveru- 
lent. At lower elevations. Topanga Canyon of the Santa Monica Range at 280 meters. 
21. Lecanora rubina (Lam. & DC.) Ach. 
Thallus subfoliaceous, pale, yellowish green, spreading at the periphery by short, 
“urgid, rounded, crenate lobes, beneath leather color, blackening toward the circum- 
1 Cromb. Monogr. Brit. Lich. 433. 1894. 
