48 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
44. Lecidea lurida (Swartz) Ach. 
Thallus cespitose, of closely imbricate, in outline sinuate squame, bright cervine 
brown and shining above, whitish beneath, somewhat smaller than those of L. globi- 
Jera; apothecia 1 to 1.5 mm. wide, sessile near center of squama, flat, becoming 
slightly convex, red brown with a brown proper exciple; epithecium red brown, 
gradually paling downward; thecium tinged more or less pale brownish, the lower 
part almost colorless, about 90 4 high; paraphyses closely coherent; asci clavate; hy- 
pothecium obscurely brownish; spores ellipsoid and oblong-ellipsoid, colorless, 
11 to 16 » long, 5 to 6 » thick; hymenial gelatine staining with iodine blue, soon chang- 
ing to a sordid vinous color, 
On earth. Santa Monica Mountains above Sherman. 
CATILLARIA Mass. 
Thallus crustaceous, uniform or lobulate at the periphery, ecorticate; alge Pro- 
tococcus; apothecia circular, innate to sessile, with a pallid or colored or even horny 
proper margin and hypothecium; paraphyses not branching, separate or coherent, 
at times capitate and colored at the tips; asci 8-spored; spores generally small, ovoid, 
ellipsoid to oblong, straight or curved, bilocular, the spore membrane and septa thin, 
without a halo; spermatia cylindric to oblong-ellipsoid, straight or curved. 
KEY TO SPECIES. 
Growing on bark. 
Thallus gray. 
Effuse, often indistinct; apothecia purplish black..... 6. C. glauconigrans, 
Coarsely granular; apothecia black.................... 1. C. atropurpurea, 
Thallus white or whitish. 
Minutely squamulose...........2...-2.222222-2-220200- 2. C. globulosa., 
Minutely granulose.............2.2.2202.0.22-020000ee 3. C. tricolor. 
Growing on rock. 
Thallus absent............... 20.2202. c cece cece e ee eee eee 4a. C. lenticularis 
acrustacea, 
Thallus present, more or less gray. 
Thin. 
Dull olive gray, smooth.................2..2.000. 4. C, lenticularis. 
Rimose-areolate.............22.-222222022022222--. 5. C. chalybeia. 
Not thin; squamulose, ash color........................ 7. C. franciscana. 
1, Catillaria atropurpurea (Schaer.) T. Fries. 
Crust thin, gray, coarsely granular, often poorly developed; apothecia small, sessile ; 
disk flat, purplish black to black; hypothecium pale; asci clavate; spores ellipsoid 
to oblong-ellipsoid, distinctly bilocular, slightly constricted and one loculus smaller 
(narrower) than the other, 15 « long, 6 to 7 # thick. 
On bark of Lombardy poplar near Ballona, Los Angeles County. 
2. Catillaria globulosa (Floerke) T. Fries. 
Thallus dingy white or grayish, granulate to minutely squamulose and obsolete, 
KHO-,, Ca (C1O).—; apothecia numerous, scattered or crowded, small, 0.25 to 0.3 mm, 
in diameter, adnate; disk dull brown to dull black with a thin dark grayish, sub- 
crenulate margin, later becoming convex and papillate, the margin disappearing 
(moistened the disk and margin of the juvenile apothecia are seen a dull dun color); 
epithecium brownish black, gradually paling downward; thecium faint grayish or 
colorless, 60 » high; paraphyses adglutinate; hypothecium colorless; asci clavate; 
spores oblong or narrowly ellipsoid, some faintly bilocular, 9 to 13 » long, 4 to7 u thick; 
hymenial gelatine with iodine intense blue. 
