63 
97. PINUS Russelliana ; pentaphylla, foliis longissimis, strobilis elongatis 
horizontalibus subcernuis verticillatis rectiusculis sessilibus: squamis apice 
rhomboideis pyramidatis rectis obtusis, seminibus oblongis alà nigricante 
4-pló brevioribus. 
Found on the road from San Pedro to S. Pablo, near 
Real del Monte. It differs from P. Devoniana in its cones 
being shorter, not pendulous, nor curved, with the ends of 
the scales distinctly pyramidal. The cones are from seven 
to eight inches long, about two inches wide near the base, 
and almost acute at the upper end. I trust to be excused in 
the eyes of His Grace the Duke of Bedford, if 1 propose to 
attach the name of Russell to this fine species. 
98. PINUS macrophylla ; pentaphylla, foliis longissimis, strobilis rectis hori- 
zontalibus ovatis elongatis solitariis : squamis apice transversis rhomboideis 
runcinatis, seminibus subrhomboideis rugosis ala testaceá 4-plà brevioribus. 
The leaves of this are from fourteen to fifteen inches 
long; the cones grow singly, and are about six or seven 
inches long, about three inches broad near the base, and 
taper gradually into an obtuse point. The species differs 
from P. Russelliana in the longer leaves and shorter and 
stouter cones, the ends of whose scales are strongly hooked 
backwards. Mr. Hartweg found a single tree, of small size, 
on the ** Ocotillo." ` o— 
99. PINUS pseudostrobus ; pentaphylla, foliis'tenuissimis glaucescentibus, stro- 
bilus ovalibus verticillatis horizontalibus ; squamis apice rhomboideis py- 
ramidatis erectis rectiusculis linea elevatá transversá, seminibus ovalibus ala 
nigrescente quadrupló v. quintupló brevioribus. 
Mr. Hartweg describes this as allied to Pinus Devoniana, 
but quite distinct and resembling P. Strobus in habit; he 
found it very common at Anganguco, about 8000 feet above 
the sea. The leaves are fine and glaucous, like those of the 
Weymouth Pine. The cones are about four inches long, by 
an inch and half in breadth over the middle. 
100. PINUS apulcensis ; pentaphylla, foliis tenuibus abbreviatis a 
glaucis, strobilis pendulis verticillatis ovatis acutis: squamis rhomboideis 
pyramidatis rectis nunc elongatis medio constrictis, seminibus ovalibus ala 
lineari quadruplo brevioribus. 
The short leaves and very glaucous shoots distinguish 
this, independently of the ovate cones, covered closely with 
pyramidal elevations, which are sometimes prolonged and 
