120 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
entire margin, this finally disappearing; epithecium subcontinuous, dark brown; 
thecium 64 » high, sordid, with iodine blue; paraphyses loosely coherent, coarse, 
jointed, their heads black brown, globular; hypothecium dark brown; asci clavate 
and subinflated-clavate; spores 8, ovoid-ellipsoid, bilocular, brown, 12 to 18 # long, 
5 to 10 # thick, slightly constricted; spermogones shown as small black depressions; 
spermatia rod-like, straight, 8 to 12 4 long and somewhat over 1» thick, with acumi- 
nate ends. 
On siliceous and calcareous rocks in the Santa Monica Range; near Elsinore and 
elsewhere in southern California. Found also in the northern, southern, and eastern 
United States. 
4. Buellia bolacina Tuck. 
‘‘Thallus of scattered, turgid, wavy and plicate, glebous squamules (1 to 2 mm. 
wide), from greenish glaucescent at length white; apothecia small (scarcely reaching 
1 mm. in width), adnate, planoconvex, opaque, subimmarginate, the margin soon 
disappearing, the hypothecium blackening; spores ellipsoid, bilocular, 12 to 204 
long by 6 to 10” thick. The well-developed paraphyses loose and brown-headed.”? 
On the earth in mesas, San Diego, Cooper; in the same habitat, Lower California, 
Orcutt. 
Authentic specimens not having been seen, the above description is copied from 
Tuckerman. 
5. Buellia pullata Tuck. - 
Thallus rimose-areolate or of dispersed ‘‘dark olivaceous brown” and blackening, 
flat squamules; apothecia adnate, small, not over 0.5 mm. wide; disk black, flat with 
a concolorous, thin, rather indistinct proper margin; epithecium subcontinuous, 
brown black; thecium 80 to 88 » high, colorless, stained handsome blue with iodine, 
but neither epithecium nor hypothecium affected by this reagent; paraphyses co- 
herent, about 3 4 thick, jointed, some thickened above and with brown black heads; 
hypothecium brown black like the epithecium; asci clavate and subinflated-clavate, 
48 x long, 16 to 18 » thick; spores 8, ellipsoid, brown, bilocular, 12 to 16 long, 7 to llp 
thick, little or not at all constricted, the loculi with a bluish gray center. 
On trap rock, Topanga Canyon, Santa Monica Range, at 230 meters altitude. Re- 
ported also from the vicinity of San Francisco by Dr. A. C. Herre. 
6. Buellia badia (Fries) Koerb. 
Thallus dark olivaceous brown, rimose and squamulose, the squamules flat, rugu- 
lose, lobate-crenate; apothecia innate and adnate-sessile, from 0.5 to 1 mm. wide, 
often two or several grouped; disk black, flat to convex, the proper margin thin, 
entire, black, finally almost disappearing; epithecium brown, granulose; thecium 
60 high, light brown; paraphyses separate, slender, with brown, abruptly capitate 
tips; hypothecium light to dark brown; asci inflated-clavate; spores 12 to 14» long, 
7 to 8 » thick, obtuse-ellipsoid, bilocular, constricted; hymenial gelatine with iodine 
blue. 
On sandstone and crystalline rocks. Foothills of the San Gabriel Mountains near 
Sierra Madre, Los Angeles County; running over mosses on bowlders in the Yosemite 
Valley. Reported from Kansas, but principally west of the Rocky Mountains from 
Washington southward. 
7. Buellia retrovertens Tuck. 
Thallus whitish, convex, round or sublobulate areoles, scattered or loosely aggre- 
gated, KHO+ greenish yellow, Ca(ClO),—; apothecia adnate-sessile, 0.25 to 1 mm. 
wide; disk black, at first flat with a thin erect margin, later convex and immarginate; 
epithecium brown black, subgranulose; thecium colorless, partly light brownish, 60 it 
high, with iodine blue then sordid blue; paraphyses coherent, not distinct, with 
brownish capitate tips; hypothecium pale brown; asci clavate, rounded at top, 45 
