HASSE—LICHEN FLORA OF SOUTHERN CALIFORNIA. 39 
colorless; paraphyses slender, entire, coherent, at the tips olivaceous brown; asci 
clavate; spores in 8’s, colorless, simple, 12 to 14 » long, 5 to 7 » thick. 
On disintegrated granite in the Santa Monica Range above Hollywood, the type 
locality. At Big Rock, the castern base of the San Gabriel Range, at 1,600 meters. 
Type deposited with Dr. A. Zahlbruckner; duplicate in herb. Hasse. 
8. Lecidea lapicida Fries. 
Thallus medium thin, of a clear light ash color, finely rimose-areolate, the areola 
slightly concave to flat, becoming lightly convex, or angulose and almost diffract, 
not stained with KHO; sterigmata short, straight, 6 to 8 » long; apothecia dull black, 
innate, roundish to slightly angular; disk flat with a very thin, black proper margin, 
later becoming convex, pruinose, the margin sinuate and the disk lobed, the margin 
then obscure; epithecium bluish black or brown; thecium colorless, 80 » high, with 
iodine blue turning sordid brown; paraphyses stout, subcoherent with abruptly capi- 
tate, brown or bluish black tips; hypothecium faint yellowish grayish; asci oblong 
clavate and subinflated clavate; spores in 8’s, bluntly ellipsoid, 12 to 15 y long, 6 to 
7 » thick. 
On granite and other hard crystalline rocks, quite frequent, ascending from middle 
elevations; Santa Cruz Mountains, Herre; Topanga Canyon, Santa Monica Range, at 
250 meters; San Antonio Canyon, San Gabriel Range, at 1,600 meters; Elsinore; 
Matilija Canyon, Ventura County; Tehachapi Mountains, at 1,800 meters. Through- 
out North America and Europe. 
9. Lecidea vorticosa (Floerke) Koerb. 
Thallus in our district absent; apothecia sessile, the disk velvety black, from concave 
to flat and at last slightly convex, the proper margin persistent, black, crenulate; 
epithecium dark blue, subgranulose; thecium about 44 » high, pale bluish gray, with 
iodine blue; paraphyses strict, coherent; hypothecium dark; spores in 8’s, oblong, 
ellipsoid or almost linear, 8 to 11.5 » long, 4 to 5 » thick. 
On disintegrated granite at Shoemakers Ranch, Big Rock Creek, 1,600 meters 
altitude, at the northeastern (desert) base of the San Gabriel Range. 
10. Lecidea platycarpa Ach. 
Thallus crustaceous, thin, indeterminate, light gray, furfuraceous, indistinctly 
rimose, becoming obsolete; hypothallus indistinct; apothecia dispersed, small, 0.3 
to 1 mm. wide, sessile, round; disk flat, with an entire or slightly crenulate, black 
proper margin, this almost disappearing as the disk becomes convex; hypothecium 
slightly horny, obscurely brown; epithecium brown, subcontinuous; thecium color- 
less; paraphyses strict, coherent, with clavate, bluish black tips; asci clavate; 
spores ellipsoid, 16 to 20 » long, 7 to 10 » thick. 
On sandstone, Santa Cruz Mountains, Herre; Grand Canyon, Arizona. May be 
found in our limits. 
11. Lecidea lithophila (Ach.) T. Fries. 
Thallus poorly developed, of small, thin, scattered, whitish to pale olivaceous 
squamules having a thin whitish pulverulent border; apothecia sessile, round, small, 
from 0.3 to 0.8 mm. wide; disk dull black, when moistened indistinctly brownish, 
flat to lightly convex, greenish pruinose, round with a thin, entire, black margin 
later becoming obsolete; epithecium continuous, brown; thecium colorless or faintly 
grayish tinted, with iodine blue, 80 to 92 high; paraphyses strict, subcoherent; 
hypothecium pale brown to almost colorless; asci inflated-clavate; spores rarely seen, 
ellipsoid, 9 to 15 » long, 5 to 7 # thick; with NO, the epithecium becoming carmine 
red and purple. 
On sandstone, Santa Cruz Mountains, Herre. A similar lichen is found in the 
southern part of the State, but being without spores can not be positively determined. 
