HASSE—-LICHEN FLORA OF SOUTHERN CALIFORNIA. 43 
22. Lecidea glebulosa (J. E. Smith) Schaer. 
Crust thick, of whitish, convex squamules, crenate-lobulate and rugulose, fur- 
furaceous, KHO+yellow, Ca(ClO),+red (red reaction faint and tardy to appear in 
some specimens or altogether absent); apothecia sessile, often grouped and con- 
glomerate; disk red brown, brown black, and dull black (as usually in the herbarium); 
disk at first flat, becoming convex and papillate, excluding the pale apothecial 
margin; epithecium continuous, reddish brown, gradually paling downward; thecium 
colorless, at least the lower part; paraphyses coherent, their tips clavate and slightly 
colored; hypothecium colorless: asci clavate or subinflated-clavate; spores oblong- 
ellipsoid, with blunt ends and one or several globules disappearing after KHO, 10 
to 18 » long, 4.5 to 7 » thick; hymenial gelatine blue with iodine, no change by KHO. 
On soft crumbling sandstone and earth in the Santa Monica Mountains; on earth 
at Point Loma near San Diego and at Eden Hot Springs, Riverside County; Santa 
Catalina Island. 
23. Lecidea varians Ach. 
Crust pale ash-colored, thin, granulose, circumscribed by a black hypothalline 
border, KHO-+-yellow, Ca(ClO),—; apothecia separate or congregated and then appear- 
ing conglomerate, adnate, dull brown, when moistened semitranslucent, soon becom- 
ing planoconvex and the margin obsolete; epithecium colorless or pale yellowish; 
hypothecium colorless or with barely a shade of color; paraphyses adglutinated: 
pores ovoid, 7 to 12 long, 5 to7 » thick; hymenial gelatine with iodine blue gradually; 
changing to brown. 
Frequent on various living barks in the Santa Monica Mountains. Common 
throughout North America. 
4, Lecidea quernea (Dicks.) Ach. 
Crust granulate-pulverulent, yellowish greenish, thin, effuse; apothecia subinnate, 
numerous, dispersed; disk convex, brown black to black, the margin becoming 
obsolete; epithecium subcontinuous, brown; thecium about 80 y high, colorless to 
light brownish; paraphyses coherent; hypothecium of the same color as the thecium; 
asci clavate; spores in 8’s, 10 to 12 p» long, 7 to 8 » thick; hymenial gelatine with 
iodine blue. 
On various barks, Santa Monica Mountains; on redwood fence boards near ‘‘ Pigeon 
Point Lighthouse,’’ Santa Cruz Peninsula, Herre. West coast of North America, 
Europe. 
25. Lecidea fuscescens Sommert. 
Thallus of minute, flat, grayish scales forming an effigurate crust upon a conspicuous, 
black hypothallus; apothecia numerous, small, 0.3 to 0.5 mm. in diameter, sessile; 
disk dull brown black or black, circular, flat with a thin inconspicuous margin, 
becoming finally obscure with the disk slightly convex; epithecium subcontinuous, 
bluish gray; thecium 48 » high; paraphyses coherent; hypothecium colorless; asci 
cuneate, 42 y: long, 10 » thick; spores in 8’s, ovoid-ellipsoid, 6 to 10 p long, 4 to 7 
thick. 
On living bark of Grossularia hesperia, in canyons of the Santa Monica Mountains. 
Although assigned by the authorities cited to an alpine and subalpine habitat, it 
is here reported from this ‘‘subtropical” climate, corresponding well with the descrip- 
tions of Tuckerman and T., Fries. 
26. Lecidea viridescens (Schrad.) Ach. 
Thallus dull grayish green and darkening, its irregularly globular granules mostly 
approximate, effuse; hypothallus indistinct, KHO+yellowish brown, Ca(C1O)_4- 
reddish; apothecia adnate or closely sessile, small; disk flat or slightly convex, 
black, soon immarginate; thecium 60 p high, pallid; paraphyses brown at the apices 
60653°—13——4 
