260 BOTANY. 
Pinus EpuLis, Engelm. in Wisliz. Mem. note 2.—Similar to the last, 
but with more slender, entire leaves, mostly in pairs, rarely in threes; stami- 
nate flowers surrounded by a 4-leaved involucre; anthers with-a knob or 
short spur; cones and seeds similar to those of the last species, only a little 
smaller; cones usually but 14’ long; cotyledons as in previous species. 
Camp Bowie, Arizona, Rothrock (493). Common from Southern 
Colorado through New Mexico to Arizona. The two species here described, 
together with the slender and 3-leaved P. cembroides, with harder shells to 
the larger seeds, and 8-12 cotyledons, and the little-known 4—5-leaved 
P. Parryana of the northern part of Lower California, constitute a small 
group of very peculiar Pines, which we may designate as the Cembroid 
Pines, characterized by the leaves of the flexilis group (with entire margins, 
peripheral ducts, and deciduous sheaths), by the seeds of Cembra and by 
the cones and scales of Pinaster. Perhaps it would be proper not to lay 
too much stress on the number of leaves and minor characters, nor on 
their geographical difference, and to unite them under the oldest and most 
appropriate name of P. cembroides, Zucc., though systematists, counting 
the leaves, have separated them widely in their books. 
There is no pine entirely analogous to them in the Old World, unless 
we should refer here the little-known P. Bungeana, Zuce.; Murr. Conif. 
Jap. 18, of Northern China. It has similar, small, subglobose cones, 
though with less prominent knobs, but armed with recurved prickles; the 
seeds are smaller, with a very distinct wing, the leaves in threes lose their 
sheaths as our Nut-pines do, but are serrulate, and have several peripheral 
ducts, but, singularly enough, also usually a single interior or paren- 
chymatous one, forming thus a link between several groups. 
Pinus Arizonica, n. sp.—A middle-sized tree, 40° high, 2-3° in diam- 
eter; branches squarrose, with persistent bracts; leaves in fives, 5-7’ 
long, $’ wide, closely serrulate, in a sheath over 1’ long (when old less 
than half as long); oval cone 23’ long, 14’ thick; scales with a prominent 
knob, which in the lower ones is recurved, armed with a recurved prickle. 
On the Santa Rita Mountains, in Southern Arizona, Rothrock (652), 
in 1874. “The best lumber of that region, there called yellow pine.” 
This seems to be a meagre account to found a new species upon in a genus 
