HASSE—LICHEN FLORA OF SOUTHERN CALIFORNIA, 73 
about two-thirds the height of the thecium; asci saccate, 126 to 130 p high, thickened 
at top; spores 8, oblong ovoid ellipsoid, 4-locular and submuriform, 24 to 32 y# long, 
16 to 20 » thick; hymenial gelatine with iodine a handsome blue extending into the 
hypothecium, the spores pale yellow. 
Frequent on sandstone in the Santa Monica Range. 
The form monocarpum Nyl. occurs in the same locality, though less frequent; the 
thalline lobes are dispersed, small, and almost entirely covered by the solitary apothe- 
cium. 
7%. Collema pulposum (Bernh.) Ach. 
Thallus hard, brittle when dry, when moist leathery and gelatinous, blackish green, 
orbicular, the prostrate lobes of the periphery becoming ascending toward the center, 
the lobes turgid, more or less deeply crenate at the margin and plicate; apothecia 
quite numerous, subinnate or appressed, 1 to 2 mm. in width; disk brick red, flat or 
convex, the thalline margin persistent, thick, crenulate; epithecium pale yellowish, 
gradually paling downward, subcontinuous; thecium 92 to 108 » high, colorless; 
paraphyses adglutinate; hypothecium yellowish, darker than the epithecium; asci 
inflated-clavate; spores ovoid-ellipsoid, submuriform, 16 to 32 » long, 8 to 16 » thick, 
4 or &locular, the central loculi again septate in the long axis of the spore. 
In the Santa Monica Range on earth among mosses and on decaying granite. 
8. Collema limosum Ach. 
Thallus dark olive green, appressed or excentrally ascendent, the small lobes 
entire or crenulate, mostly approximate, hardly 0.5 cm. wide; apothecia appressed, 
flat to planoconvex, from 1 to 2.75 mm. in diameter, brick red and darkening, the 
thalline margin thick, entire or crenulate; epithecium subcontinuous, rich yellow, 
thicker and darker toward the circumference; thecium colorless, 100 » high; para- 
physes coherent; hypothecium about half the height of the thecium, of similar color 
and likewise darkening at the circumference; asci ventricose, equaling the thecium 
in height; spores obovoid-ellipsoid, 4-locular and submuriform, 22 to 30 # long, 9 to 
12 » thick; hymenial gelatine blue with iodine, the spores yellow. 
On earth in the Santa Monica Range. Southern United States; Europe; Asia 
(China). 
9. Collema verruciforme (Ach.) Nyl. 
Thallus dark brown, forming small patches of ascending clusters of broadly club- 
shaped, and toward the tops flattened and lobulate, lobules, about 2 to 3 mm. high; 
apothecia numerous, sometimes 3 or 4 on a lobule, sessile, 0.2 to 0.5 mm. in diameter; 
disk at first concave, then flat, dark red, when moistened of a bright blood red with - 
a lighter colored, entire proper margin; epithecium continuous, chocolate brown; 
thecium 112 to 118 » high, colorless; asci clavate to inflated-clavate, 64 to 80 » long, 
24 to 32 » thick, the membrane thickened above; spores 4-locular, 16 to 22 u long, 
12 » thick, quadrangular in shape with rounded angles, the loculi with oil globules; 
hymenial gelatine with iodine blue, the spores pale straw color; spermatia minute, 
oblong, 3 to 4 » long, barely 1 # thick. 
On decayed oak wood in the Yosemite Valley. It may extend to our territory. 
LEPTOGIUM (Ach.) S. F. Gray. 
Thallus membranaceous, crustaceous-granulose and lobed at the periphery, foliace- 
ous or fruticulose, the upper or both surfaces pseudoparenchymatous-corticate; 
gonidia moniliform, consisting of Nostoc; apothecia innate to sessile, lecanorine, the 
disk circular, the margin containing gonidia; asci 8-spored, the spores colorless, fusi- 
form, 4 toseveral-locular and to muriform; spermatia small, ovoid or cylindric, straight. 
