30 The: Coi^orado Experiment Station. 
berry. On close examination, marks indicating where the scales 
were located can be easily seen. 
The seeds of the junipers are furnished with hard, bony coat¬ 
ings which enable them to pass unharmed through the alimentary 
canal of birds, which sometimes feed upon them, and in this way 
distribute them to new locations. 
The junipers are strongly aromatic and from some species 
volatile oils are obtained which are used in medicine and in the 
manufacture of perfumes. 
The wood of the juniper is close grained, not hard, but durable. 
Most of the species of junipers which occur in this state are low, 
spreading, shrubby plants which are not adapted to the production 
of lumber. These low-growing sorts, however, are well suited for 
planting in the shrubbery border, on exposed banks and to cover 
the tops of walled terraces and rockwork. 
Two genera of the juniper family are represented in Colo¬ 
rado, but only three species commonly reach the stature of 
small trees. 
KEY TO THE COEORADO GENERA OE THE JUNIPER PAMIEY. 
A. Leaves in whorls of three, on mature branches, awl-shaped, spreading, 
10-12 m m. (%-V 2 in.) long, channelled and whitened above, convex 
and green below. Buds scaly. 
Genus Juniperus. 
B. Leaves opposite in pairs, on mature branches, scale-like and flattened 
against the branchlets to which they are usually grown fast; about 2-3 
mm. (Vs in.) long. On young trees and vigorous shoots the leaves 
are usually longer, slenderly pointed and somewhat spreading. Buds 
naked. 
Genus Sabina. 
GENUS Jiinipcnis —THE junipers. 
(Plate VIII. 2.) 
The species of junipers which occur in Colorado frecpient the 
rocky hills and exposed mountain slopes. They are distinguished 
from the red cedars or savins principally by the leaves being com¬ 
paratively long and joined to the branch much like those of the 
spruces. The berry-like fruit of the junipers is borne close against 
the side of the branch, while that of the red cedar is on the end of 
a very short branch. 
Two species of the genus are known in this state. The first 
of these, the mountain or low juniper (Juniperus sibirka) (Plate 
VIII. 2) is a low spreading shrub common in the foothills and 
rocky places in the mountains. Its leaves are abruptly bent at the 
base and are deeply grooved on the upper surface. 
This shrub is worthy a place in the shrubbery border and from 
