448 
flat, with a thin entire or slightly sinuate margin, becoming convex, 
conglomerate, and the margin disappearing ; spores ovoid, ellip- 
soid, 14-18 by 9-10 mic., colorless; paraphyses with dark glob- 
ular agglutinated heads; hypothecium brown. 
On sandstone, Catalina Island. January, 1895. 
LecipEA (BIATORA) PHAEOPHORA Stiz. 
Thallus pulverulent, dirty white, rimose; apothecia slightly 
convex, contiguous and angular by approximation, dull flesh color, 
the thin lighter margin disappearing; spores blunt, ellipsoid, 
colorless, 16 by 7 mic.; hypothecium colorless. 
Rocks, Catalina Island. January, 1895. 
LECIDEA SQUALIDA PERSIMILANS Nyl. 
Thallus of turgid convolutions forming rugulose cushions, 
light olive green; apothecia prominent, flat and medium 
size with a thin margin, becoming large, convex, subglobular, con- 
torted and lobed, the margin disappearing, black with a brownish 
bloom; spores acicular, thickened at one end, straight or slightly 
curved, 60 by 5-6 mic., 5—8-septate, colorless. 
Earth on rocks. San Gabriel Mountains at 1800 meters alt - 
August, 1896. 
ARTHONIA SUBDISPUNCTA Ny]. 
Thallus whitish, cinerescent, finely furfuraceous; apothecia 
roundish or oblong, slightly elevated, black; spores 1-septate, 
obovate, colorless, 11 by 4 mic. 
On the stalks of Leptosyne gigantea Kellogg, at Point Dumas 
near Santa Monica. (This is also a new station for that composite 
in Los Angeles county, it being heretofore accredited solely to 
Catalina Island.) 
VERRUCARIA PLUMBARIA Stiz. 
Thallus of white appressed scales, forming an ashy gray, 
smooth surface, bordered by a narrow rim of black hypothallus; — 
apothecia black, small, shining, subglobular with a minute orifice 
at apex; perithecium dimidiate; spores ellipsoid, acute at both — 
ends, 14-16 by 5 mic., each spore-cell constricted, colorless, 12 
tubular spore-sacs; paraphyses eapillary, distinct. 
On Quercus agrifolia and other barks, abundant. Near Santa 
Monica. 
VERRUCARIA INDUCTULA Nyl. 
Thallus smooth, rimose-areolate, dull brownish; apothecia 
elevated, pustular, entirely covered by thalline structure ; perithe- 
