Juglans. TEREBINTHINE. 35 
Juglans Oregoniana, sp. nov. 
PT, LX. Figs IO. 
Leaflet large, linear-oblong, slightly enlarged upwards"; borders minutely crenate ; ner- 
vation camptodrome. 
This fine leaf is apparently very long, and probably abruptly pointed 
(the point is broken). Its borders are minutely crenate, its secondary 
nerves close, open, at a right angle of divergence toward the base, curved 
in traversing the areas, following close to the borders in simple festoons, 
and mostly simple or without branches, connected only by strong ner- 
villes in right angle. The affinity of this species to Jugluns nigella, Heer, 
of the Alaska Flora (p. 38, Pl. [X. Figs. 2-4), is very close, the difference 
being merely in the more open lateral nerves toward the base of the 
leaves, and in the minute obtuse denticulation of the borders, the leaves 
from Alaska being sharply more coarsely serrate. The nervation, espe- 
cially the distribution of the basilar nerves, is that of the present J. mgra, 
Linn., which, however, has always some of its veins branching, and the 
border teeth larger and more distant. The linear form of the leaves is 
comparable to that of Juglans rupestris, Engelm. 
Habitat.-—On soft laminated clay with Araha Whitneyi, evidently of 
the same age as the Chalk Bluffs of California, without definite locality 
but Oregon. Voy’s Collection. 
Juglans laurinea, sp. nov. 
es EX Pigs. bE. 
Leuflet oval, narrowed upwards to a blunt point, gradually narrowed in @ curve to the 
unequilateral base ; borders sharply distinctly serrate; nervation camptodrome. 
The borders of this leaf are more distinctly serrate than in the former 
species; the nervation is also of a different and peculiar type, the basilar 
veins at an acute angle of divergence, about 30°, ascending from the thick 
midrib high up, at a distance from the borders, and anastomosing in curves 
to the first pair of secondary nerves above, which are open, more than 50°, 
and parallel to the following pairs up to the top. This nervation, which 
resembles that of some leaves of the ZLaurinew ; Laurus, Tetranthera, is also 
remarked in Juglans Baltica, Heer, a Miocene species which, however, greatly 
differs by entire borders, and the disposition of the upper veins of the 
