ak ERYTHEA. 
B. parasema (Ach.), Th. Fr., var. triphragmia, Nyl. On 
Rhus. 
B. myriocarpa (DC.), Mudd. Frequent. 
B. bolacina, Tuckerm 
B. geographica (.), Tuckerm, var. lecanorina, Floerk. 
San Antonio Cafion. 
B. Bolanderi, Tuckerm. San Antonio Cafion. 
Opegrapha atrorimalis, Nyl. 
Arthonia anastomosans (Ach.), Nyl. On bark. 
A. radiata, Pers. On Juglans and Quercus, 
A. dispersa (Schrad.). On Quercus. 
Acolium Bolanderi, Tuckerm. Frequent 
Verrucaria ‘intercedens, var. aethioboloides, Nyl. On 
shales, Santa Monica Range. 
V. viridula (Ach.), Schrad. On limestone, Santa Monica 
Range. 
VY. plumbaria, Stiz. Thallus smooth, whitish gray and 
darkening, spores colorless, bilocular, ellipsoid, each cell 
slightly constricted, 12-16 by 4-6 mic. Paraphyses distinct. 
Reaction with iodine; yellow to bronze with potassium 
hydrate. On various bushes, Santa Monica Range; frequent. 
a cerast, Solihad: forma. On Malvastrum 
Thurber 
V. lia Nyl. On bark, 
NOVITATES OCCIDENTALES.—xXI. 
By Epwarp L. GREENE. 
Ranunculus Austinew. Perennial by a fascicle of coarse 
and long fleshy-fibrous roots: stem and leaves glabrous, weak 
and rather succulent, the former 6 to 10 inches high; radical 
leaves few, of round-obovate outline, abruptly tapering to the 
very long and slender petiole or nearly truncate at base, and 
with mostly about five rather shallow terminal lobes, some 
with only three large and rather deeper lobes; cauline leaves 
cuneate-obovate, 3-lobed, sessile: flowers solitary, on very 
