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astern Mexico, Pinus osteospprma, * * 3 (specimens of which were ;sei\t to 
me by Dr. Qregg, as collected pn .the battlefield of Buena Vista,) and to 
the nut pine of California, P. mpnopkyUa, r rorY. and Frem.—these three 
species being the western representatives of Pinus Pinea and Cembra of 
the eastern continent. 
The secon#* species ,.Pinus brachyptera, 4 is the most common pine of 
New Mexico, and the most useful for timber. A third species, Pinus flexi- 
James, Was overlooked by Dr. Wislizenus, but haa been collected in 
fine specimens, by Mr. Fendler, about Santa Fe. Its leaves in fives and 
pendulous cylindrical, squarrose cones assimilate it to Pinus strobus ; but 
the seed is'large and edible, as Dr. James has already remarked, and the 
leaves are not serrulate and much stouter. The Piriones, so much eaten 
in Santa. Fe, appear principally to be',the product of Pinus edulis. I shall 
haye occasion to speak of three other pines when I come to the flora of 
the mountains of Chihuahua. 
, Linum perpnne.-. makes its first appearance here, apdreontinues to Santa 
Fe., as well as the justly so-called Lathyrus ornaius. Several species of 
Potentilldj CEnothera , Artemisia,,'and f Pentstmum, wefre collected in this 
district. 
Among the most remarkable plants met with were the Ccictacem. After 
having observed oh the* Arkansas, and northeast of it, nothing but an 
• ppuntia, which probably is; not different from O. vulgaris , Dr. W. came 
at once, as soon as the mountain region and the pine woods commenced, 
on several beautiful and interesting membefe of this curious family, an evi¬ 
dence that he approached the favorite home of the cactus tribe, Mexico. . 
; On Waggofi-mound the first (flowerfess) specimens of a strange opuntia 
wef<^ found, with an erect, ligneous stem, and cylindrical, horridly spi- 
8 Pinus osteosperma , n. spl—squamis turionum elongato-acuminatis, 
fimbriatis, squarrosis; laciniis vaginarum abbrevfatarum circinato-revolutis, 
demum deciduis; foliis Jernis binisve brevibus, tenuioribus, rectiusculis, 
nfargine lmvibus, utrumque tenuissime striatis, supra glaucis, subtus vires- 
centibus; strobilis sessilibus, erectis, subglobosis, inermibus ; seminibus 
obovatis apteris, magnis, testa dura. 
Mountain borders, near Buena Yistayand about Saltillo. A small tree, 
10to20 feet high; leaves in threes,, more rarely in twos, 1 to 2 inches long, 
much more slender than in the foregoing species; nut of the same size, 
but much harder. Pinus monophylla has broadly ovate, obtuse, ad pressed 
■ scales of the young shoots and mostly single, terete leaves; cone arid 
seeds are similar to both others. 
4 PiriUs brachyptera, n. sp.-—squamis turionum longe acuminatis, fim¬ 
briatis, squarrosis, subpersistentibus; vaginis elongatis adpressis; foliiS f ternis 
(raro binis s. quaternis) utrumque viridibus et aspero striatis; strobilis 
erectis, ovatis s. elongate conicis, squamis recurve acufeatis; seminibus 
obovatis breviter alatis. 
Mountains of New Mexico, common. A large and fine tree> often 80 
to 100 feet high, 2 and even 3 feet in diameter; sheaths 6 lines long:, 
mostly black; leaves generally in threes, rough, 3 \ to 6 inches long, in the 
specimens before me, crowded towards the end of:the branches; cones 2\ 
to 3^ inches long; seed larger than the wing, without this 3 to 4 lines 
long and 2 wide. 
