HASSE—LICHEN FLORA OF SOUTHERN CALIFORNIA. 103 
On barks and rocks with P. olivacea, perhaps less frequent. San Bernardino Moun- 
tains, Parish. 
11. Parmelia glabra Schaer. 
Thallus orbiculate, closely affixed, from olive green darkening to umber brown, 
radiately folded or undulate, the surface wrinkled, becoming smooth at the deeply 
lobed circumferences, the border crenate, medulla KHO—, Ca(ClO),+red; apothe- 
cia scattered or crowded centrally, sessile; disk concave to flat and undulating; 
thalline margin erect, coarsely crenate; epithecium continuous, light yellowish brown; 
thecium colorless, 60 » high, blue with iodine, the epithecium and hypothecium 
not staining, however; paraphyses loosely coherent; hypothecium colorless; asci 
clavate; spores 8, ovoid, 14 to 18 » long, 7.5 to 10 » thick. 
On barks. San Antonio Canyon, San Gabriel Range at 1,600 meters altitude and 
at ‘‘Seven Oaks,’’ San Bernardino Mountains. 
12. Parmelia physodes (L.) Ach. 
Thallus light greenish gray, stellate-orbiculate, loosely affixed, radiately divided, 
tubular, subinflated, somewhat flattened, with KHO the cortex yellow,the medulla 
rot affected, with Ca(ClO),—=; epithecium continuous, hyaline; thecium sordid 
yellowish, with iodine indigo blue, KHO—; paraphyses coherent; hypothecium 
colorless; asci inflated-clavate or cuneiform; spores 8, globular and ovoid-ellipsoid, 4 
to7.5plong, 4 thick; apothecia subpedicellate; disk chestnut-colored, with an inflated 
thalline margin. 
Sparingly on barks in the San Gabriel Range. Eastern United States and north- 
ward; Pacific Coast; Tasmania; Europe. 
13. Parmelia enteromorpha Ach. 
Thallus suberect, deeply divided, the linear divisions tubular-inflated, laciniately 
parted, whitish gray to gray above, their black margin passing into black beneath, 
‘KHO+ yellow, the medulla KHO+Ca(ClO),+red; apothecia sessile or subpedicel- 
late, inflated, funnel-shaped; disk chestnut, glistening, flat becoming convex, the 
crenulate, slightly inflexed thalline margin then obscure; epithecium continuous, 
yeddish, paling downward; thecium 40 to 44 » high; the lower part colorless; para- 
physes coherent; hypothecium colorless; asci clavate; spores 8, subglobular, 5 to8 u 
‘ong, 4 to 6 thick, the gonidial layer continuing beneath the hypothecium; spermo- 
gonia indicated as black, generally frequent dots. 
Frequent on shrubs and trees in the mountains. Santa Catalina Island, Trask; 
3an Bernardino Mountains, Parish; Lower California, Orcutt; Guadalupe Island, 
very luxuriant, 15 cm. in diameter, Franceschi. 
14. Parmelia subcapitata Nyl. 
Thallus as seen small, orbicular, pale straw color, closely adherent, centrally isidiose, 
at the periphery lacinate-lobed, beneath black, with KHO the cortex yellow, the 
medulla unchanged, KHO+Ca(C1O),—, sterile. 
On twigs at San Diego, Alderson (communicated by 8. B. Parish). Determination 
by the late Doctor Stizenberger. The sterile specimen is too fragmentary to allow a 
full description. 
CETRARIA Ach. 
Thallus foliaceous with ascending lobes or fruticulose; apothecia marginal or ter- 
minal, circular with a thalline margin; spores colorless, small, simple, ovoid to ellip- 
soid; gonidia Protococcus; sterigma sparingly branched, short; spermatia ellipsoid to 
clavate. 
KEY TO SPECIES. 
Thallus foliaceous. 
Yellow....... 20002-0022 eee eee ee eee eect erence ee eeeeee 1. C. juniperina, 
Green or a shade of green..........------------ +2 eee eee ee eeee 2. C. lacunosa. 
