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Gyrophora rugifera (Nyl.)Th. Fr. On rocks at the highest elevation above 
given. In all specimens seen from Southern California, where it occurs 
in the highest mountains from 2500 meters upwards, the lower surface of 
the thallus is without fibrils and somewhat lighter in color than the 
upper. 
Gyrophora phaea (Tuck.) Hasse n. comb. Thallus dark below, granulate; 
hymenium 100// high: hypothecium dark brown: paraphyses coherent; 
thecae broadly clavate, 60 // high, 20 // thick; spores 13-16// long, 8-ioju 
thick, broadly ellipsoid: hymenial gelatine with I brown, the spores a 
faint greenish yellow. Frequent on rocks at 1700 meters alt. 
Gyrophora polyphylla (L.) Koerb. On granite boulders. 
Gyrophora hirsuta (Ach.) var. grisea (Sw.) Th. Fr. With the last on 
granite boulders. 
Umbilicaria Semitensis Tuck. One-leaved, 3-5 cm. in diam. Above smoky 
gray, smooth but centrally becoming finely areolated, beneath almost 
black, coarsely granulated and towards point of insertion rugulose; mar- 
gin of frond reverted; apothecia crowded toward the circumference of 
frond, even confluent, black, angular or round, plicate, thecae balloon 
shaped, 72-112 ju long, 16-20 ju thick, with a thick sack wall; spores uni-, 
form, from 24-26 // long and 16-20// thick. This last with the two preced- 
ing species thickly cover the north side of large granite boulders 
crowning a butte several acres in extent, situated within a few minutes 
northward of Tehachepi station. 
Biatorella resinae Fr. Thallus indistinct or obsolete: apothecia small, 
sessile, black, brownish when moist, convex, immarginate, crowded; 
thecae balloon shaped, 40 // by 28 // ; spores numerous, globular, about 
2-3// in diam. Reaction with I blue changing to sordid claret. On bark 
of conifers. 
Acarospora chlorophana (Walbg.) Mass. On rocks; not frequent. 
Pertusaria Wulfenii DC. On bark at the base of trunks of Quercus Cali- 
fornica. 
Lecanora saxicola (Poll.) On rocks. 
Lecanora saxicola (Poll.) Ach. var. diffracta Fr. On rocks. 
Lecanora rubina (Vill. ) Wainio var. melanophthalma (DC.) Th. Fr. On 
rocks. 
Lecanorasordida (Pers.) Th. Fr. var. bicincta (Ram.) Th. Fr. The convex 
densely pruinose disk is circumscribed by a thin black excipulum. Spores 
18// long, 6// thick. On rocks. 
Lecanora subfusca (L.) Ach. On barks and rocks; also its variety allo- 
phana Ach., on dead wood. 
Lecanora varia Ach. On barks and rocks. Its varieties symmicta Ach. 
and saepincola Fr. , on dead wood and dead bark. 
Lecanora Hageni Ach. On bark. 
Lecanora gibbosa (Ach.) Nyl. On rocks. A similar lichen on bark of pine 
with ovate spores 20-30// long, 14-20// thick, granular, mononucleolate; 
hymenium 225 pi high; paraphases coherent; thecae 175// long, 28// thick, 
sack shaped. 
