Mar. 22,1924 
Tissue Fluids of Indicator Plants 
903 
Table IV .—Physicochemical constants for species of the sagebrush association of the 
alluvial fans —Continued 
Growth form and species. 
Date. 
Freezing 
point 
depres¬ 
sion, 
A. 
Atmo¬ 
spheres 
osmotic 
concen¬ 
tration, 
P. 
Specific 
electrical 
conduc¬ 
tivity, 
K. 
Ratio, 
conduc 
tivity to 
depres¬ 
sion, 
K/A. 
Chlo- 
rids 
per 
liter, 
Cl. 
perennial herbs— continued 
1920. 
Eriogonum ovalifolium Nutt. 
June 
7 
I.3 2 
15.8 
0.0164 
O.OI25 
2.4 
Hedysarum utahense Rydb. 
.. .do.. 
1.22 
14.7 
.0152 
.OI25 
1.8 
June 
9 
I.21 
14.5 
.0185 
•0153 
2.2 
Average. 
1.22 
14.6 
.0169 
.0139 
2.0 
Lap pula floribunda (Lehm.) Greene 
June 
7 
O.97 
11.7 
.0214 
.0220 
1.6 
June 
9 
o -93 
11.2 
.0200 
.0215 
i -5 
Average. 
0-95 
“•5 
.0207 
.0217 
1.6 
Lithospermum torreyi Nutt. 
June 
7 
1.10 
i 3-3 
.0217 
.0197 
3.8 
Oreocarya sp. 
do 
I . 03 
12 . A 
. 0206 
. 0200 
1.8 
Phlox longifolia Nutt. 
June 
9 
X . 
1.24 
14.9 
.0143 
• OIl6 
0.8 
Phlox stansburyi (Torr.) Heller. . .. 
June 
7 
I-I 3 
13.6 
.0131 
.OIl6 
i -3 
Senecio hydrophilus Nutt. 
. .. do.. 
0.86 
IO. 1 
.02 54 
. 02o6 
2.6 
Senecio multilobatus T. & G. 
June 
6 
0 . 04 . 
O 
II . 7 
. 0190 
7 
.0201 
June 
9 
0.97 
* O 
n.7 
.0152 
.0157 
Average. 
O.96 
11. t? 
.0171 
.0179 
x x • 0 
Stenotus acaulis Nutt . 
June 
7 
0.97 
11.7 
.0177 
.0182 
2.0 
...do.. 
• . • 
I . l6 
13 -9 
.0201 
.0174 
2.7 
Average . 
1.07 
12.8 
.OI89 
.OI78 
2.4 
Vida americana Muhl . 
June 
9 
I . 28 
15*4 
.0182 
.OI42 
1.0 
Wyethia amplexicaulis Nutt . 
.. .do.. 
1.23 
14.7 
.0239 
.0195 
3-8 
Zygadenus paniculatus S. Wats . 
...do.. 
1.05 
12.7 
.0106 
.OIOI 
0.1 
ANNUAL HERBS 
Amsinckia tessellata A. Gray . 
June 
5 
0.85 
10.2 
.0209 
.0246 
1.9 
Argemone hispida A. Gray. 
June 
15 
I. OO 
12.0 
.0180 
.Ol8l 
0.8 
Argemone rotundata Rydb. 
June 
5 
0.97 
11.7 
.0150 
•0155 
Camelina microcarpa Andrz . 
June 
7 
o -95 
II -5 
.Ol8l 
.OI9I 
June 
9 
0.97 
11.7 
.0147 
.0151 
3-3 
Average . 
0.96 
11.6 
.OI64 
.0171 
3-3 
Erodium cicutarium (L.) I/Her. . . . 
June 
9 
1.02 
12.3 
.0201 
.OI96 
0.9 
Sophia filipes (A. Gray) Heller.... 
... do.. 
1.27 
15-3 
.0187 
.0147 
1.0 
SAND-HIDE MIXED ASSOCIATION 
Sand dunes or sand hills clothed with vegetation constitute but an 
insignificant part of the area of Tooele Valley. 
We have nothing to add to the general description of the association 
as given by our predecessors. From their rather limited studies of 
the physical conditions, they concluded that the soil is characterized 
by (a) a low moisture-holding capacity, as indicated by the low moisture 
equivalent, by ( b ) the presence of available moisture, at least during 
the earlier part of the season, at a depth attainable by the more deeply 
penetrating roots, and by (c) a very low salt content. 
