10 FOSSIL FLORA OF THE SIERRA NEVADA. 
which it differs by the acuminate point. Nothing more of the nervation 
can be observed upon the specimen than what is seen on the figure. 
Habitat. — Chalk Bluffs, Nevada County, California. Voy’s Collection. 
SALIX, L. 
Salix Californica, sp. nov. 
Pi. I. Figs. 18-21. 
Leaves subcoriaceous, entire oval-obtuse, or oblong, obtusely pointed, or lanceolate, tapering 
to a long acumen, rounded in narrowing to the base, short petioled ; secondary nerves 
in an acute angle of divergence ; areolation obsolete. 
The four leaves figured of this species show a great diversity of shape. 
They vary in size from four to six centimeters long, and from one and 
a half to two centimeters broad, the broadest part being generally a 
little below the middle, and hence, either gradually decreasing into a 
long acumen, as in Fig. 19, or to a short slightly obtuse point, as in Fig. 
21, or rounded and more obtuse at the top; the consistence is subcoria- 
ceous, and the surface smooth; the midrib is narrow, and the secondary 
veins are only discernible, with some parallel nervilles in right angle, as 
in Fig. 18. They have generally one pair of basilar veinlets, derived 
from the midrib near the base of the lamina, and following the borders 
to their connection with an upper vein by nervilles. 
This species is intimately related to S. integra, Goepp., Schoss. FI., p. 25, 
Pl. IX. Figs. 1-16, differing by more distant lateral vems, more obtuse 
or obtusely pointed leaves, generally broader, and of larger size. Goeppert 
compares his species to Salix repens, L., which has in the shape of some 
of its leaves some relation to this species also, but is very distinct by 
the salient nervation. Ours is rather comparable to the leaves of S. 
Coulter, Anders., or to S. sessihfolia, Nutt., both species of the Western 
slope of North America. 
’ Habitat.— Table Mountain, Tuolumne County, California. Voy’s Collec- 
tion. 
Salix elliptica, sp. nov. 
Pl. I. Fig. 22. 
Leaves elliptical, equally narrowed, and rounded to an obtuse point and to the petiole, 
borders minutely unequally serrate ; lateral veins curving to and along the borders ; 
tertiary veins short and thin, nervilles numerous and distinct. 
