40 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
12. Lecidea brandegei Tuck. 
Thallus crustaceous, pale dingy yeliowish, determinate, rimose-areolate, the areole 
convex, round, oblong or angular, now and then lobate; hypothallus black, KHO—, 
Ca(Cl O),—; apothecia appressed, medium large (0.5 to 1.5 mm, wide), dull black; 
disk primarily flat with a semiturgid, prominent, dark grayish, entire or finely crenu- 
late, now and then sinuate proper margin, later convex and the margin darker, becom- 
ing obscured; epithecium continuous, bluish black or grayish brown; thecium color- 
less, about 76 4 high; paraphyses strict, moderately loosely coherent, clavate above, 
not septate nor branched; hypothecium light brown, paler than the epithecium; asci 
clavate; spores in 8’s, rarely seen, ovoid-ellipsoid, 6 to 9 » long, 4 to5 » thick; thecium 
stained deep blue with iodine. 
On granite at Camp Baldy, at 1,500 meters altitude, in San Antonio Canyon, Los 
Angeles County; in Tahunga Canyon at a like elevation. ‘Rocky Mountains, Colo- 
rado,’’ Brandegee (Tuckerman). 
13. Lecidea atrolutescens Nyl.; Herre, Proc. Washington Acad. Sci. 12: 84. 1910. 
Thallus crustaceous, squamulose, light yellowish grayish to fawn color, imbricated 
or somewhat scattered, flat to lenticular, round or flexuose, naked or thinly whitish 
pruinose, the border whitish and crenulate, attached to the substrate by medullary 
hyphe, KHO—, Ca(ClO),—; hypothallus indistinct; apothecia sessile, scattered or 
crowded to conglomerate, 0,75 to 2 mm. wide; disk dull black, in age pruinose, with 
a raised, somewhat turgid, regular or mostly wavy margin, the disk becoming finally 
strongly convex and the persistent margin deeply sinuate; epithecium continuous, 
sordid dark grayish brown, gradually paling downward; thecium colorless to pale ash 
gray, 80 to 84 » high; paraphyses coherent, slightly clavate above and colored at the 
tips, not septate nor forked; hypothecium grayish yellowish, paler than the epithe- 
cium, much higher than the thecium; asci clavate and subinflated-clavate; spores 
in 8’s, oblong-ellipsoid or ovoid-ellipsoid, 12 to 16 « long, 5 to 8 « thick; iodine stain- 
ing epithecium, thecium, and hypothecium intensely blue; no changes with KHO; 
with NO, the epithecium stained violet blue and in part obscurely a dark rose color; 
spermogones not seen. 
On granite at Martins Camp, Mount Wilson, at 1,600 meters altitude (the type 
locality); at Camp Baldy, San Antonio Canyon, at 1,500 meters. 
Type deposited with Doctor Nylander; duplicate in herb. Hasse. Collected at 
Grizzly Peak, Santa Cruz Mountains, by A. C. Herre. 
14. Lecidea plana Lahm. 
Thallus crustaceous, thin, finely rimose-areolate, often obsolete, gray, the hypo- 
thallus black, indistinct, KHO—, Ca(ClO),—; apothecia small to medium-sized, 
adnate, variously angulose to round-lobed; disk concave to plane, black, often with 
a faint reddish tinge, the margin persistent,.prominent; epithecium brownish; thecium 
60 to 67 » high; paraphyses strict, simple, the separated apices brownish gray; asci 
narrowly clavate; hypothecium pale brownish; spores narrowly oblong-ellipsoid, 11 
long, 3 » thick; hymenial gelatine dark blue with iodine. 
On Sandstone, Santa Monica Range, near the Soldiers’ Home; on same substratum 
near Newport, Orange County. Not heretofore reported from North America. Nor- 
way, England, and Germany. 
15. Lecidea elabens Fries. 
Crust effuse, whitish or darkening to ash gray, granulose to areolate-rimose, the 
areole verrucose or minutely rugulose, KHO—, Ca(ClO),—; apothecia numerous, 
crowded, 0.25 to 1.25 mm. in diameter, closely sessile; disk black, with a thin, entire, 
brownish black margin, later becoming convex to subglobose, somewhat rugulose, 
and the margin excluded; epithecium sooty brown, paling downward; thecium 
colorless to light reddish brown; paraphyses coherent; hypothecium pallid to color- 
