334 HANNIBAL: A PLIOCENE FLORA FROM CALIFORNIA 
from only five localities, and by far the larger part was derived 
from two. No doubt careful search would have revealed many 
more and would materially extend the flora, but the incoherent 
character of the beds restricts collecting to fresh exposures, to be 
found only in cafions and gorges. Furthermore, collecting is 
possible only during the summer and fall months after the matrix 
has dried out sufficiently to stand transportation to the laboratory: 
The localities are as follows: 
PorTOLA: gulch below Holliday’s ranch in créek-cut about 
1,000 feet above mouth of gulch, 14 mile south of Portola, Santa 
Cruz Mountains. The mollusk beds just below this point have 
been known for a number of years to the Stanford University 
Geological Survey. Plant beds were found by the writer in 1908. 
Subsequently collections were made in 1909 and 1910, and in 
connection with Dr. J. P. Smith and party of students in 1910. 
STEVENS CANON: creek-cut just above “‘big camp ground,” a 
flat planted with Eucalyptus trees, about 114 miles above mouth 
of gorge, Stevens Cafion, Santa Cruz Mountains. Found by W. 
G. Hannibal, the writer’s father, in 1909. Subsequently visited 
in connection with Dr. Smith and party of students, 1910. The 
material consists almost solely of Salix and lignitized wood. 
CALABAZAS CANON: “reef” in creek bed at nose of bend above 
second wagon bridge, 44 mile from mouth of gorge, Calabazas 
Cafion, Santa Cruz Mountains. Found by the witer in 1908, 
subsequent collections made in 1909 and 1910, in connection with 
Dr. Smith and party of students in 1910, and with Mr. H. 
M. Edson of Palo Alto in 1910. 
SOLLY RANCH; near a spring tunnel on Solly Ranch north of 
Bird Creek, 34 mile west of old dairy on mesa above San Benito 
River, and 4 miles southwest of Hollister, Gavilan Range. This 
locality was discovered a number of years ago by the owners of 
the ranch when digging for water. A specimen is contained in the 
collection of the late Miss Annie R. Laws, now the property of the 
Geological Museum at Stanford University. The locality was 
visited by the writer in 1908 and again in 1910 with Mr. Edson. 
All the best material was derived from the tunnel. 
BEAR VALLEY: forks of a small gulch below limestone hill, 
over ridge 2 miles northeast of Cook P. O., Bear Valley, Gavilan 
