Sept, 1, 1924 
Stripe Rust 
219 
Table I .—Diameter measurements of unrediniospores of Puccinia glumarum 
* 
C ollection 
Range of size in micra 
_ 
Average of 200 
spores 
No. 
Host, 
Place 
Time 
Short 
diameter 
Long 
diameter 
Short 
diam¬ 
eter 
Long 
diam¬ 
eter 
1 
Agropyron cristatum. _. 
Moscow, Idaho. ... 
Julv, 1916_ 
13. 5-24. 2 
16. 3-27. 0 
18. 33 
21. 85 
2 
_do_ 
_do_ 
_do... 
14. 5-25. 5 
17. 5-29. 6 
18. 63 
21.90 
3 
_do_ __ . 
Hilmar, Wash 
Julv 9, 1919_ _ 
July, 1916_ 
14. 1-23. 0 
15. 8-29. 6 
18. 07 
22. 81 
4 
Agropyron cristatum 
Moscow, Idaho_ 
14. 5-23. 9 
18.4-29.3 
19. 27 
22. 25 
(Importation from 
Russia). 
a 
Bromus marginatus _ 
Pullman, Wash_ 
June 14, 1915. 
14. 4-21. 8 
16. 8-25. 8 
18. 04 
21. 43 
6 
Brornus pacifieus _ 
Friday Harbor, 
June, 1916_ 
15. 3-21. 3 
18. 0-28. 3 
18. 29 
21. 72 
Wash. 
7 
Brom us sitchensis _ 
N. Mt. Vernon, 
_do_ 
14. 1-21. 2 
15. 4-26. 7 
17.39 
20. 66 
Wash. 
8 
Elymus canadensis a_ 
Pullman, Wash_ 
Julv,1915_ 
14. 7-23. 8 
19. 7-33. 8 
18. 81 
24. 17 
9 
_do_ . 
. . do 
July 25, 1915.. 
Sept. 10, 1916. 
14. 6-21. 2 
18. 1-31. 4 
18. 05 
23. 722 
10 
Elymus condensates _ 
Moro, Oreg_ 
14. 6-22. 8 
18. .5-28. 6 
18. 918 
22. 817 
11 
Elymus glaucus.. . ... 
N. Mt. Vernon, 
June, 1916_ 
14. 9- 24. 2 
18. 4-30. 2 
19. 02 
23.90 
Wash. 
12 
_do_ ^ _ 
Friday Harbor, 
Wash. 
_do__ 
16. 4-25. 9 
16. 7-28. 6 
18. 749 
22. 071 
13 
_do_ 
_do_ 
_do_ 
14. 8-24. 1 
17. .5-27. 7 
17. 867 
22. 268 
14 
Horde urn iubatum _ 
Cherrv Creek, Den- 
June 14, 1916. 
12. 7-21.0 
17.4-28.2 
17. 294 
22. 425 
ver, Colo. 
15 
_do_ 
Denver, Colo_ 
_do_ 
14. 2-23. 1 
17.2-27.9 
18. 36 
22. 714 
16 
_do b _ 
Moro, Oreg . ... 
Sept., 1916... 
. ...do.- . . 
13. 7-20. 7 
18. 0-27. 7 
18. 42 
23. 852 
17 
.do_ _ 
Garfield, Wash 
14. 2-22.0 
18. 2-27. 9 
18. 594 
22. 553 
18 
_do_ 
N. Yakima, Wash.. 
June, 1916_ 
15. 3-23. 0 
17.2-30.0 
18. 780 
22. 996 
19 
_do_ 
Selah, Wash_ 
June 17,1916.. 
15. 3-23. 6 
18. 6-31. 1 
19. 323 
23. 830 
20 
_do c _: 
Denver, Colo_ 
June 14,1917.. 
15.0-23.8 
17. 9 30. 2 
20. 135 
24. 648 
21 
Hordeum murinum _ 
Los Angeles, Calif.. 
May, 1916_ 
15. 3- 21. 7 
16. 5-25. 6 
18. 748 
21. 732 
22 
_do_ 
Del Monte, Calif_ 
_do_ 
14. 2-21. 7 
16. 7-28, 5 
17. 873 
22. 537 
23 
_do_ 
Tehachapi, Calif_ 
May, 1915.... 
13. 7-21.5 
18.4-27.2 
18.999 
22. 475 
24 
_do_ 
Campbell, Calif_ 
Mav, 1916.... 
15. 2-22.6 
18. 3-20. 3 
18. 245 
21. 448 
25 
Hordeum nodosum _ 
Mt. Vernon, Wash. _ 
Sept. 2, 1916.. 
14. 7-25. 1 
17. 6-24. 9 
18. 248 
21.128 
26 
Hordeum vulgare... 
Pullman, Wash 
June 14,1915.. 
July 2, 1914... 
June 7, 1916 
14. 4-21. 7 
18. 0-29. 8 
18. 973 
22. 275 
27 
Sitanion hystrix. . .. 
Redmond, Oreg 
14. 5-22. 9 
18. 0-27. 7 
18. 431 
22. 859 
28 
Sitanion jubatum. 
Ashland, Oreg _ 
15. 3-23. 4 
18. 7-30.0 
18. 462 
23. 751 
29 
_do_ 
_do_ 
_do._ 
14. 2-21. 5 
17. 7-29. 2 
18. 554 
23. 336 
30 
Sitanion longifolium _ 
Red Mountain, Colo 
Aug. 26, 1907. 
13. 7-25. 4 
16. 4-29. 2 
17. 556 
21. 692 
31 
Triticum compactum... 
Pullman, Wash_ 
Aug. 18, 1915. 
13. 8-22. 2 
17. 5-29. 2 
18. 126 
21. 976 
32 
Triticum dicoccum (Buf- 
Moro, Oreg_ 
June 11, 1915.. 
14.0-21.3 
17. 7-28.8 
18.067 
22. 776 
fum winter emmer). 
33 
Triticum durum _ 
Moscow, Idaho_ 
June 15,1915.. 
14. 9-20.4 
17. 0-25.4 
17. 504 
20. 803 
34 
Triticum spelta __ - 
_do ._ . __ 
July 2, 1919_ 
July, 1915 
14. 1-22. 6 
16. 2-28. 5 
18.107 
21. 303 
35 
Triticum vulgare 
Bozeman, Mont 
14. 7-23. 2 
17. 9-32. 1 
18. 245 
22. 896 
36 
Triticum vulgare (Chul) 
Corvallis, Oreg_ 
June 10,1915.. 
15. 1-21.9 
19. 1-31. 1 
18.666 
24.172 
37 
_do 
. do 
June 12,1915 
15. 5-24. 6 
18. 0-32. 1 
19. 154 
23. 287 
38 
Triticum vulgare.. _ 
_do_ 
June, 1915_ 
16. 0-23. 0 
18. 0-27. 7 
18. 721 
23. 082 
39 
. _do<* 
Bozeman, Mont 
July 26, 1915.. 
June, 1915_ 
15. 4-23. 6 
19. 0-28. 4 
19. 467 
24.181 
40 
_do_ 
Moscow, Idaho 
14. 1-21. 3 
16. 1-27. 8 
17. 727 
21.077 
41 
_do. . _ . . . 
Spokane Co., Wash. 
Brigham, Utah 
July 20,1915.. 
June 23,1915.. 
June 15,1916.. 
12. 7-23. 5 
15. 9-27. 8 
18. 517 
22. 689 
42 
. .do . . . 
14. 4-24. 2 
15. 7-31. 1 
18. 305 
24. 319 
43 
_do_ 
Moscow, Idaho_ 
15. 1-23. 3 
17. 8-28. 0 
18. 102 
22. 038 
44 
_do. . _ . ... . 
Casa Blanca, Ariz... 
Moro, Oreg . . 
May 25, 1915. 
June 11,1916.. 
14. 0-20. 0 
17. 9-27. 5 
17. 947 
22. 219 
45 
Wheat (species and va¬ 
riety not given). 
14. 0-23. 5 
16. 8-29. 7 
18. 322 
23. 562 
46 
_do___ 
Freeman, Wash_ 
Bozeman, Mont . 
June 19,1916.. 
14. 7-22. 4 
17. 4-28. 4 
18. 471 
23. 039 
47 
Wheat«_ ... .. 
Aug. 20, 1915. 
June 22, 1916... 
14. 8-23. 2 
19. 0-30. 2 
18. 888 
24. 272 
48 
Wheat (Jones Winter 
Pullman, Wash_ 
14. 3-23. 3 
17. 5-29. 5 
17. 382 
21. 636 
Fife). 
49 
Wheat 
Eagle, Idaho 
June 24,1916.. 
June 14,1916.. 
14. 5-22. 5 
17. 8-27. 8 
17. 911 
22. 574 
50 
Wheat (mixed)_ 
Mt. Vernon, Wash.. 
13. 3-20. 6 
17. 9-28.0 
18.009 
21. 705 
Grand average 
18. 401 
22. 628 
r < Spores very thick-walled, from 0.8 to 3.2 micra. 
Nearly all teliospores. 
<• Nearly all teliospores. Shows transition between urediniospores and teliospores. 
<i Transition from urediniospores to teliospores. 
« Telial stage. 
