ADDITIONS TO THE LICHEN FLORA OF SOUTHERN CALI- 
FORNIA— NO. 11 
H. E. Hasse 
Endocarpon petrolepideum (Nyl.). Hasse. Sub Verrucaria Nyl. Li. 
Japonia p. 88. Thallus of thickish brown squamae with lobulate circumference ; 
one or several punctiform depressions in each squamule indicating the apothe- 
cia. Spores 2, oblong with about 10 septa in short axis and 3-4 in long axis, 
muriform, qOju to 52/x long, i6^i to 20 /jl thick, pale yellowish; hymenial gelat. 
and spores yellow with iodine. On quartz at “Barton’s Peak,’’ Santa Monica 
range. 
Endocarpon pallidum Ach. Thallus of small lobed and imbricate squamules; 
sp. 2, muriform, 40/i to 52 n long, i6^t o 20 u thick, pale brown; hym. gel. 
not stained by iodine. Sandstone, Santa Monica range. 
Dermatocarpon lecideoides (Mass.) Hasse. Crustaceous-areolate, finely 
rimose, areolae small, about 0.5 mm. wide, dark gray to blackening. Apothecia 
small, black, immersed, o. 1-0.2 mm. wide with sp. simple colorless, oblong- 
ellipsoid, 6^-24/z long, 8/x— 9. 5^ thick. Hym. gel. blue, then sordid-vinous with 
iodine, K — . On quartz at Eden Hot Springs, Riverside Co., and a similar 
lichen at Griffith Park, Santa Monica range. 
Dermatocarpon squameellum (Nyl.) Herre. Sub Verrucaria Nyl. in litt. Thal- 
lus of green squamae, becoming dun color in herb., 2-4 mm. wide, lobulate and 
imbricate, moderately thick, flat; apothecia indicated by one or several dark 
punctiform spots; sp. colorless, fusiform-ellipsoid, 20^-24^ long, 8^t wide; para- 
physes absent. Shaded banks among moss, Sepulveda Canyon, Santa Monica 
range (type locality) and near Matilija Springs, Ventura Co. A similar lichen 
is found near Mayfield on base of trunks of Quercus lobata. 
Heterocarpon ochroleucum (Tuck.) Mull. Arg. Sp. smoky v oblong-ellipsoid, 
2-celled, 16^-19^1 long, 6/j.S/ji thick. At Granite Wells, Death Valley (S. B. 
Parish); at Palm Springs and Elsinore, Riverside Co. 
Arthopyrenia fallax Arn. On various barks, Catalina Island and Santa. 
Monica range. 
Arthopyrenia punctiformis Arn. Same substrata and localities as preceding.. 
Calicium Curtisii Tuck. Sp. simple, brown, ellipsoid and oblong-ellipsoid, 
iO/x-15/i long, 5 m~ 6 m thick; a few appear spuriously; septate with some indica- 
tion of constriction. On Rhus lamina. Santa Monica range. 
Arthonia radiata (Pers.) Th. Fr., var. simulans Leight.. Apothecia barely 
or not elevated above thallus, roundish, flat, otherwise like the species. On 
California Walnut, Santa Monica range. 
Arthothelium subcyrtodes Willey. Sp. oblong, 16^-26/i long, I0ju-I2ju wide. 
Hym. gel. blue with iodine, the sp. yellow, ascus wall not stained. On Heter- 
omeles, Catalina Island and dead Sambucus at “Clifton by the Sea.’’ 
Arthothelium sanguineum (Will.) A. Zahlbr. On various barks, Catalina 
Island. 
Arthothelium spectabile (Flw.) Mass. On various barks, Catalina Island and 
Santa Monica range. 
