34. CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
1. Picea engelmanni Parry; Engelm. Trans. Acad. St. Louis 2: 212. 1863. 
ENGELMANN SPRUCE. 
Abies engelmanni Parry, loc. cit. 
Type Loca.ity: ‘‘Higher parts of the Rocky Mountains, from New Mexico to the 
headwaters of the Columbia and Missouri rivers. 
RanGE: British Columbia to New Mexico and Arizona. 
New Mexico: Sandia Mountains; West Fork of the Gila; Bonito. Higher moun- 
tains, Canadian and Hudsonian zones. 
A conical tree 20 to 25 meters high or less, with smooth, thin, flaky bark, dark 
~ green foliage, and pendulous cones borne mostly on the uppermost branches. Itoccurs 
only in the higher mountains at 2,700 to 3,300 meters where there is permanent 
moisture, frequently forming dense pure forests. It is also found on the faces of cliffs 
and on the tops of mountains up to timber line, where it is generally straggling and 
dwarfed. When growing alone itis usually perfectly conical, bearing nearly horizontal 
branches almost to the ground. The cones are small and purplish until maturity, 
when they become dry and brown. 
2. Picea parryana Parry, Gard. Chron. 11: 334. 1879. CoLoRADO BLUE SPRUCE. 
Abies parryana Engelm.; Parry, loc. cit. 
TYPE LocA.ity: Not stated. 
Rance: Higher mountains of New Mexico and Arizona, northward to Wyoming. 
New Mexico: Chama; Winsors Ranch; Sandia Mountains; James Canyon; White 
Mountain Peak. Canadian and Hudsonian zones. 
Very similar to the preceding, but the young leaves covered with a bloom which 
gives rise to the name of ‘‘blue spruce,’’ and the bark thick and deeply furrowed- 
The range is similar to that of the Engelmann spruce, although usually at slightly 
lower levels, and the value of the timber is about the same. The lumber is in 
both cases rather poor, being weak and spongy, and full of knots. It is used to 
some extent for making boxes. The Colorado blue spruce is a much better tree for 
decorative purposes because of its color and also because it is a more rapid grower. 
It does well at Santa Fe and could, no doubt, be used in other places of similar ele- 
vation if properly cared for. 
3. ABIES Link. Fim. 
Large trees with spreading or ascending branches; leaves flat, blunt, short, so 
arranged as to make the branches appear flat; cones erect, cylindrical, borne near the 
top of the tree, their scales thin and deciduous. 
KEY TO THE SPECIES. 
Bark thin, smooth, corky...........----.---20--2200220000- wee e cece 2 A. arizonica, 
Bark thick, rough, not corky. 
Resin ducts of the leaves within the soft tissue, remote from the 
epidermis......... 2.2222... e eee eee eee eee eee cece eee 2. A. lasiocarpa. 
Resin ducts near the epidermis, on the lower side of the leaf.... 3. 4. concolor. 
1. Abies arizonica Merriam, Proc. Biol. Soc. Washington 10: 116. 1896. 
CORK-BARK FIR. 
Type Locauity: “West slope of San Francisco Mountain, Arizona,’? 
RanGeE: Higher mountains of Arizona and New Mexico. 
New Mexico: Twining; Sandia Mountains; Baldy; Baldy Peak, Mogollon 
Mountains. Hudsonian Zone. 
A small conical tree growing in cooler situations in dense mixed forests, usually 
associated with spruce and aspen. It is easily recognized by its thin, smooth, white, 
corky bark, which persists after the tree has decayed, 
