HASSE—LICHEN FLORA OF SOUTHERN CALIFORNIA. 59 
On earth, Santa Monica Range; Santa Catalina Island; cosmopolitan like the 
species. 
6. Cladonia caespiticia (Pers.) Floerke. 
Primary thallus squamulose-foliaceous, laciniate-lobed and obscurely crenate, light 
green or light yellowish green above, beneath white, pulverulent; squamules densely 
crowded forming small cushions, erect, KHO—, Ca(Cl0),—; podetia and spermogonia 
not seen. 
On earth at base of cliffs; apparently rare. 
7. Cladonia verticillata subcervicornis Wain. 
Primary thallus persistent, olive green above, white beneath; podetia short, not 
over 1 cm. high, greenish gray to light brownish, somewhat granular or occasionally 
beset with several small squamules; cup flat or slightly concave, with brown apothecia 
on the rim, separate or conglomerate, sometimes elevated on a short pedicel, a few 
cups with a short indication of an axial prolongation, KHO+-yellow, Ca(ClO),—. 
On earth under shrubs at San Diego. 
8. Cladonia fimbriata simplex (Weiss) Wain. 
Primary thallus thick; squamules medium-large, light gray green above, white 
beneath; podetia short, not longer than 15 to 17 mm., whitish, finely pulverulent; 
cups narrow, from 1 to2 mm. wideattherim; apothecia not seen, KHO—, Ca(C10),—. 
On ground among moss, Santa Catalina Island, in the San Gabriel and Santa Monica 
Ranges, and also near San Diego. 
9. Cladonia fimbriata subulata (L.) Wain. 
Primary thallus scarce; squamules small, broadly spatulate or rounded, crenate, 
olive green above, white beneath; podetia from 1 to barely 2 cm. high, simple, cream 
color, finely pulverulent, squamulose, not cup-bearing, acuminate and pointed at the 
apex; sterile. . 
Earth and rotten wood, Santa Cruz Mountains, Herre; shaded earth in the Santa 
Monica Range. 
10. Cladonia fimbriata clavata Amold. 
Primary thallus evanescent; podetia longer than in the preceding varieties (2.25 
em.), whitish, finely pulverulent, more or less bluntly clavate above. 
On moss-covered bowlders, Topanga Canyon, Santa Monica Range. 
11. Cladonia pityrea (Floerke) Fries. 
Squamules small, lobate, brownish above, whitish beneath; podetia from 5 to 10 
mm. high, whitish or light grayish, finely pulverulent; cups narrow, the rim den- 
ticulate or often irregular and proliferous, the dentations and proliferations fertile; 
apothecia small, dark brown. 
On earth; frequent and dispersed throughout the district. 
GYROPHORACEAE. 
Thallus of one or several fronds, attached centrally to the substratum, the medullary 
layer containing Pleurococcus gonidia; apothecia appressed, sessile or subpedicellate, 
having a proper, mostly carbonaceous margin; disk gyrately furrowed, rarely smooth; 
asci 1 to 8-spored; spores colorless or dark, simple or several-celled or muriform. 
KEY TO GENERA. 
Spores simple, eight in asci...............-.2..2-2----24---- GYROPHORA (p. 60). 
Spores muriform-multilocular, one or two in the asci...-..- UMBILICARIA (p. 61). 
60653°—13——5 
