HASSE—LICHEN FLORA OF SOUTHERN CALIFORNIA. 5 
On granite rocks, common throughout our district. A North American lichen 
occurring also in northern Africa and Europe. 
8. Verrucaria integrella Nyl. 
Thallus pale grayish cream color, furfuraceous, indistinctly rimose-areolate; peri- 
thecia black, innate, sessile and projecting above the thallus, depressed-globular, dimid- 
iate, the apical aperture very minute, often invisible; asci lanceolate, tapering upward ; 
paraphyses absent; spores 8, ovoid, 17 to 20 p long, 11 to 15 » thick, the contents 
with one or several oil globules more distinctly defined than the epispore; no reac- 
tion with iodine. 
On argillaceous shale in the Santa Monica Range. 
4. Verrucaria margacea papillosa (Ach.) Nyl. 
Thallus sordid light green brown, effuse, subrimulose and rugulose; perithecia 
dull black, dimidiate, semiglobular, the lower part covered by the thallus; amphi- 
thecium soft, light brown; paraphyses gelatinous; asci ventricose, 80 to 92 long, 
28 to 30 » thick, the membrane gelatinous and indistinct; spores ovoid-ellipsoid, 
16 to 20 » long, 7 to 10 # thick; hymenial gelatine stained yellow with iodine. 
On argillaceous rock at Ballona Bluffs near Santa Monica. 
5. Verrucaria margacea terrestris Nyl. subsp. nov. in litt. 
Thallus indistinct or absent; perithecia semiglobular, black; spores as in the pre- 
ceding variety. 
On clay, foothills of the Santa Monica Mountains, near the Soldiers’ Home. 
6. Verrucaria aethiobola (Wahl.) Ach. 
Thallus pale tan color or pale olive greenish, thin, subdeterminate or in small 
blotches, partly covering the base of the perithecium, this black, small, semiglobular, 
somewhat shining and with a minute aperture, dimidiate; asci broadly saccate and 
ventricose, gelatinous and indistinct like the paraphyses; hymenial gelatine pale 
vinous red with iodine; spores 8, oblong-ellipsoid, their granular contents clearing 
after KHO, 15 to 20 » long, 6 to 8 » thick. 
Not rare in the Santa Monica Range on slaty rocks. Reported from Europe and 
eastern Asia. 
7. Verrucaria nigrescens Pers. 
Thallus brown black to dull black, loosely rimose-areolate and crumbling, often 
leaving the large perithecia exposed, these dimidiate, black, semiglobular, mostly 
covered by thallus except the apices; spores oblong-ellipsoid, 17 to 28 u long, 8 to 124 
thick. 
Common on various rocks throughout North America, northern Africa, and Europe. 
8. Verrucaria viridula Ach. 
Thallus greenish brown, thick, moistened, dark olive green, areolate-diffract; 
perithecia large, black, dimidiate, conical, immersed in thallus, the tip alone being 
visible; spores 8, large, ovoid-ellipsoid, granular, 28 to 32 # long, 12 to 15 4 thick. 
Frequent on calcareous and other rocks in our district. Occurs in the middle west- 
ern United States, in Europe, Oriental Asia, and North Africa. 
9. Verrucaria dacryodes Nyl.; Hasse, Bull. South. Calif. Acad. 2:73. 1903. 
Thallus effuse, thin, dull greenish black to dark olive green, minutely rimose; 
perithecia small, semiglobular, dimidiate, covered by the thallus, the amphithecium 
dark gray; asci lanceolate, 60 to 68 » long, 24 to 28 » thick, very gelatinous; spores 8, 
obovate-oblong, one end attenuate, 14 to 17 » long, 11 » thick; paraphyses indiscerni- 
ble; hymenial gelatine with iodine pale vinous red, the asci being better defined 
after staining, the membrane 4 to 6 « thick, remaining hyaline and the contents of the 
asci staining yellowish orange. 
