Feb. 1,1925 
Urediniospores of Cronartium Ribicola 
287 
Table II .—Field series; means for each 100 urediniospores measured; Cronartium 
occidentale 
Forest 
path¬ 
ology 
No. 
Host 
Locality 
Date collected 
Mean 
length 
Mean 
width 
Mean 
wall 
thick¬ 
ness 
Ratio 
mean length 
Set 
No. 
mean width 
27029 
Ribes aureum___ 
Farmington, N. Mex__ 
Sept. 9,1918 
27033 
.do.. 
Aztec, N. Mex.. 
Sept. 10,1918 
27151 
do _ 
Clayton, N. Mex_ 
Sept. 26,1919 
■ 24.2 
15.4 
2.17 
1.57 
1 
27154 
.do_ 
Farmington, N. Mex.. 
Aug. 2 ,1919 
29087 
.do. 
Miller Valley, Ariz- 
Oct. 6,1917 
28218 
_do_ 
Monrovia, Calif_ 
May —, 1919 
28275 
_do.. 
_do_!.. 
May 13,1919 
29518 
_do_. 
Morgan, Utah_ 
Aug'. 24,1920 
26.6 
15.7 
2.17 
1 69 
2 
29519 
do_ 
Iron Co., Utah_ 
July 30,1920 
26475 
Ribes odoratum. 
Prescott,' Ariz_ 
Oct. 2 ,1917 
29515 
Ribes aureum. __ 
Fillmore, Utah. 
Aug. 7,1920 
29516 
_do_ 
Hygrum, Utah_ 
Aug. 22,1920 
29517 
_ _do 
Scipio, Utah. 
Aug. 10,1920 
26.0 
15.2 
2.11 
1.70 
3 
36221 
.do.. 
Iron Co., Utah.. 
July 30,1920 
36222 
.do.. 
Beaver, Utah.. 
Aug. 3,1920 
27100 
.do. 
Hayden, Colo. 
Oct. 18,1918 
26159 
_do_ 
Meeker, Colo... 
Oct. 2,1917 
27046 
.do.. 
Trimble Hot Springs, 
Colo. 
Sept. 14,1918 
25.3 
15.9 
2.17 
1.58 
4 
27047 
_do_ 
Hermosa, Colo_ 
Sept. 15,1918 
27049 
.do.. 
Durango, Colo. 
Sept. 15,1918 
32707 
Grossularia 
Mono Lake, Calif_ 
Aug. 20,1919 
velutina. 
34076 
Ribes aureum... 
Bridgeport, Calif. 
Aug. 2,1919 
36621 
Ribes gracilli- 
.do. 
Aug. 20,1919 
23.9 
15.2 
1.91 
1.57 
5 
mum. 
34019 
Grossularia in- 
Denver, Colo.. 
July 1,1919 
ermis. 
34020 
_do.. 
.do. 
July 1,1919 
29525 
_do_ 
Monti cello, Utah. 
Aug. 15; 1918 
29654 
Grossularia re- 
Mancos, Colo.. 
Sept. 12,1918 
22644 
clinata. 
. - do_ 
Prescott, Ariz_ 
Oct. 27,1917 
24.1 
15.3 
1.90 
1.58 
6 
29392 
.do. 
Mancos,'Colo.. 
July 3L 1918 
26745 
Ribes aureum... 
Pagoro Springs, Colo.. 
Sept. —, 1917 
22648 
Ribes odoratum- 
Prescott, Ariz. 
Oct. 29,1917 
22635 
_do_ 
_do.. 
Oct. 27,1917 
29463 
do __ 
Mancos, Colo_ 
Aug. 9,1918 
25.7 
15.4 
2.08 
1.67 
7 
22634 
Ribes aureum. __ 
Prescott, Ariz.. 
Oct. 2 L 1917 
36112 
_do_ 
Monrovia, Calif. 
June 15,1920 
28294 
Ribes gracilli- 
Monrovia; Calif_ 
June 25,1919 
mum. 
28277 
Ribes aureum_ 
_do.... 
May 18,1919 
25.6 
14.5 
1.89 
8 
28276 
_do__ 
.do. 
May 17,1919 
1 . <0 
23396 
.do..... 
.do. 
May 22,1919 
25054 
Ribes odoratum. 
_do. 
Oct. 27,1919 
26485 
Ribes aureum... 
Naturita, Colo. 
Aug. 18,1917 
26499 
_do. _ 
Dfinvfir, Cnlo_ _ 
Sept. 25,1917 
27101 
do ._ .. __ 
Craig, Colo 
Oct. 18; 1918 
■ 25.8 
15.7 
2.16 
1.65 
9 
27039 
_do_ 
La Plata, Colo 
Sept. 11,1918 
36059 
do_ 
Monrovia, Calif.. __ 
Feb. 25; 1919 
2859 
.do_ 
Boulder, Colo_ 
July —,1914 
24648 
_do. 
Ute Reservation, Colo. 
July —,1897 
22618 
.do. 
Bayfield, Colo. 
Aug. 26,1917 
■ 25.6 
15.3 
2.06 
1.68 
10 
24420 
.do. 
.do. 
Sept. 15,1917 
36089 
.do. 
Monrovia, Calif.. 
June 14,1920 
