28 
BULLETIN 604, U. S. DEPARTMENT OF AGRICULTURE. 
incense cedar, being found throughout the yellow-pine and lower 
mixed-conifer zones. Other oaks also are found with it, although 
not so extensively. 
Bigtree or mountain redwood {Sequoia washingtoniana) also 
occurs within the range of incense cedar, and is associated more or 
less intimately with it wherever found. 
In southern California incense cedar associates most frequently 
with western yellow, Jeffrey, and sugar pine. Here at the upper 
limits of its range it also mixes with white fir and occasionally with 
lodgepole or limber pine, while below the commercial timber belt it 
is found growing with big-cone spruce, pihon, coulter pine, and 
western juniper. 
STAND. 
Owing to the scattered occurrence of incense cedar, figures as to 
stand and yield have little general application, since the widest 
variations frequently occur in the same locality and the species 
seldom, if ever, predominates in the stand. As an example, how- 
ever, of actual conditions, the average stand of cedar in the mixed- 
conifer type on the Plumas National Forest, based on an intensive 
reconnaissance of 2,200 acres, is given in Table 18. 
Table 18. — Average stand of incense cedar per acre, mixed-conifer type, Plumas 
National Forest; average of 2,200 acres, from reconnaissance data. 
Diameter 
breas thigh 
(inches). 
Number 
of trees 
per acre, 
incense 
cedar. 
Per cent 
of total 
number 
of incense 
cedars in 
each 
diameter 
class. 
Per cent 
of incense 
cedar in 
the stand 
by 
diameter 
classes 
based on 
number 
of trees. 
12 
0.36 
.32 
.36 
.39 
.48 
.45 
.45 
.37 
.26 
.29 
.35 
.17 
.17 
.11 
.01 
.11 
.03 
.06 
.01 
7.5 
6.6 
7.5 
8.2 
10.5 
9.3 
9.3 
7.8 
5.5 
6.1 
7.2 
3.4 
3.4 
2.2 
1.5 
2.2 
.6 
1.2 
.0 
21.1 
20.0 
23.3 
24.2 
24.6 
27.2 
23.9 
21.9 
22.8 
23.5 
27.5 
20.6 
27.3 
19.5 
16.5 
33.1 
13.1 
30.1 
5.0 
14 
16 
18 
20 
22 
24 
26 
28 
30 
32 
31 
36 
38 
40 
42 
44 
46 
48 
50 
52 
.01 
12.0 
Total 
4.S2 
100.0 
23.1 
Expressed in terms of volume, the average stand of incense cedar was 2,329 feet, board measure, per acre 
or about 14 per cent of the total volume. 
