82 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
1. Massalongia carnosa (Dicks.) Koerb. 
Thallus squamulose, dark brown; squamules lobate, incised, suberect. and imbri- 
cated, about 2 mm. wide, pale beneath; apothecia small, barely over 0.5 mm. wide, 
sessile; disk flat, biatorine, dark brown when dry, moistened dark red; epithecium 
continuous, reddish brown; hypothecium faintly yellowish tinted; thecium 100 p 
high, colorless; paraphyses coherent, septate, some capitate and colored at the top; 
asci inflated-clavate; spores oblong-ellipsoid, bilocular, 22 to 24 » long, 8 to 11 pe thick, 
the epispore thin; hymenial gelatine blue with iodine, soon becoming brown. 
Among moss on bowlders. Yosemite Valley. Arctic Canada; England. 
STICTACEAE. 
Thallus frondose-foliaceous, large, horizontally spreading, loosely attached to the 
substratum, both surfaces corticate; beneath the upper cortex the gonidial layer of 
Palmella or Nostoc gonidia; under surface with tomentose rhizine and cyphels— 
circular, depressed perforations of the cortex, or pseudocyphels—roundish, white 
isidiose spots; apothecia sessile or elevated, scutelliform with a proper margin; para- 
physes stout, septate, not branching; spores colorless or colored, fusiform to acicular 
and bilocular to plurilocular; sterigma multiarticulate; spermatia short, straight, 
mostly with slightly thickened ends: 
Only one genus and one species as yet reported from our district. 
STICTA (Schreb.) Ach. 
Characters of the family. 
1. Sticta anthraspis Ach. 
Thallus large, spreading, 5 to 15 cm. wide, tawny brown, deeply lobed, the rounded 
lobes crenate-lobulate at the border, the upper surface reticulate, deeply and coarsely 
lacunose, the under surface fawn-colored at the circumference, darkening centrally 
where affixed to the substratum, and clothed throughout with a dense short nap; 
white pseudocyphelle numerous; apothecia sessile along the prominent reticulations, 
from 1 to4 mm. in diameter; disk reddish brown, at first concave with a crenulate 
thalline margin, eventually flattish and the margin obscure; epithecium continuous, 
brown; thecium 84 to 96 » high, colorless or pale brownish in places; paraphyses 
coherent, gently clavate at the pale brown tips, septate; hypothecium yellow; asci 
clavate and inflated-clavate; spores fusiform, from mostly bilocular to 4-locular, 22 to 
32 long, 5 to 8 » thick, epispore thick. 
Along the Pacific coast; Westport, Washington, Foster; Santa Cruz Peninsula, 
Herre; on oak bark at 800 meters altitude in the San Gabriel Range along the ‘““New 
Mount Wilson Trail.’’ 
PELTIGERACEAE. 
Thallus frondose-foliaceous, mostly large, the upper surface corticate, beneath this 
the gonidial layer composed of Palmella and Nostoc gonidia; lower surface reticulate- 
veiny and villous, ecorticate, affixed to the substratum by bundles of rhizinee issuing 
from the veins; apothecia mostly marginal, roundish, sessile or innate upon the upper 
or under surface of the thallus; asci 2-sporous to multisporous; spores colorless, light 
or dark brown, ellipsoid, fusiform to acicular, bilocular to parallel-plurilocular. The 
family is represented in southern California by one genus. 
PELTIGERA Willd. 
Thallus frondose, large, corticate only above, beneath villous and reticulate-veiny; 
apothecia adnate-sessile on the upper surface of extended lobes, without a true thalline 
margin; asci 6 to 8-spored; spores colorless, fusiform, parallel 4 to 8-locular, the epi- 
spore thin, Gonidial layer beneath the cortex, of blue green Nostoc or bright yellow 
green gonidia, 
