24 
BULLETIN 883, IT. S. DEPARTMENT OF AGRICULTURE. 
DESCRIPTIVE KEY TO VARIETIES. 
No serious attempt is made here at classification, but the varieties 
fall into rather natural groups when arranged according to geo- 
graphical sources. That these types may be clearly visualized for 
the reader, they are arranged in Table IX in accordance with a de- 
scriptive key, so that one type blends as imperceptibly as possible 
into the next. The numbers appearing in this key are repeated in 
Table X, so that the reader may be able to associate any of the C. I. 
numbers in Table XI with the geographical source or group type. 
Such an arrangement has been attempted in the nursery plantings, 
but this naturally is changed from year to year as a more definite 
classification of the material is obtained. The data presented in 
the two parts of Table XI are arranged in the siame order, and a fair 
knowledge of the behavior and possibilities of the different types can 
be obtained from a careful study of these results. 
Table XI. — Agronomic and yield data for flax varieties grown in the nursery-row experi- 
ments at Mandan, N. Dak., during 1914, 1915, and 1916. 
C I. No. 
Height (inches). 
1914 1915 
J 
22 
29 
20 
26 
28 
30 
is 
20 
20 
"*"30" 
16 
20 
22 
22 
IS 
24 
18 
22 
18 
22 
21 
29 
16 
15 
13 
17 
13 
17 
13 
16 
14 
16 
9 
16 
8 
13 
13 
15 
10 
15 
12 
13 
18 
15 
17 
15 
Aver- 
age. 
33.3 
23.3 
24.3 
25.3 
28.0 
25.3 
24.7 
24.7 
26.0 
24.0 
23.0 
24.7 
25.3 
22.0 
26.3 
25.0 
24.3 
24.7 
24.3 
25.7 
25.0 
24.7 
24.3 
23.5 
24.3 
22.3 
27.3 
18.3 
20.5 
23.3 
18.0 
21.3 
20.7 
19.7 
19.3 
24.3 
14.7 
14.7 
14.7 
14.3 
14.7 
13.5 
15.5 
12.7 
14.0 
12.3 
11.7 
15.7 
15.7 
Proportion of straw to grain. 
1914 
3.4:1 
3.3:1 
2.9:1 
3.2:1 
2.5:1 
2.6:1 
2.8:1 
2.5:1 
2.6:1 
2.6:1 
2.7:1 
3.6:1 
2.8:1 
2.8:1 
3.0:1 
3.1:1 
3.5:1 
2.8:1 
2.2:1 
2. 8:1 
3. 1:1 
2.9:1 
2.6:1 
3.0:1 
3.7:1 
3.0:1 
5.4:1 
2.4:1 
3.1:1 
17.0:1 
1. 9:1 
4.0:1 
4.5:1 
3.9:1 
4.8:1 
3.9:1 
1.8:1 
2.7:1 
2.1:1 
1.9:1 
2.3:1 
4.0:1 
2.3:1 
3.0:1 
2.6:1 
2.8:1 
2.3:1 
4.0:1 
4.7:1 
1915 
5.4:1 
2.1:1 
2.1:1 
2.3:1 
2" 0:1 
2.4:1 
2.2:1 
1.7:1 
1.8:1 
2.4:1 
1.8:1 
1.9:1 
2.3:1 
1.9:1 
1.7:1 
1.8:1 
2.0:1 
2.5:1 
2.4:1 
2.0:1 
2.1:1 
1.8:1 
2"V:i 
1.5:1 
2.4:1 
1.4:1 
2.2:1 
5.9:1 
3.6:1 
2.0:1 
1.6:1 
1.8:1 
2.6:1 
2.9:1 
2.3:1 
2.5:1 
2.0:1 
1.9:1 
1916 
6.3:1 
4.5:1 
4.0:1 
3.3:1 
*2.9:i 
3.4:1 
3.1:1 
2.7:1 
2.9:1 
3.0:1 
4.4:1 
3.1:1 
3.0:1 
3.3:1 
3.2:1 
3.6:1 
3.1:1 
3.0:1 
3.5:1 
3.1:1 
3.3:1 
3.0:1 
3.1:1 
2.8:1 
2.9:1 
4.0:1 
3.1:1 
3.6:1 
3.9:1 
16.5:1 
4.9:1 
5.5:1 
3.3:1 
4.0:1 
4.9:1 
2.3:1 ... 
4.2:1 
2.5:1 
Aver- 
age. 1 
5.0:1 
3.3:1 
3.0:1 
2.9:1 
"2.5:1 
2.9:1 
2.6:1 
2. 3:1 
2.4:1 
2.7:1 
3.3:1 
2.6:1 
2.7:1 
2.7:1 
2.7:1 
3.0:1 
2.6:1 
2.6:1 
2.9:1 
2.7:1 
2.8:1 
2.5:1 
t 3. 1:1 
2.9:1 
2.5:1 
3.9:1 
2.3:1 
|3.3:1 
7.7:1 
8.1:1 
4.2:1 
4.0:1 
2.9:1 
3.5:1 
3.8:1 
2.4:1 
2.5:1 
2.3:1 
2.0:1 
2.1:1 
2.3:1 
3.5:1 
2.4:1 
Weight of 1,000 seeds (grams). 
1914 
3.713 
3.814 
3.851 
3.810 
4.149 
3.849 
4.636 
4.510 
4. 356 
4.500 
4.284 
4.535 
4.397 
4. 554 
4.477 
4.399 
4."515 
5.059 
"Ois' 
"6.*803' 
'i'-iio' 
6. 384 
8. 238 
5.253 
5.593 
4.753 
4. 2S3 
4.0S0 
3.586 
3.577 
3.506 
3.485 
4.749 
6.756 
4.780 
4.209 
5.210 
4.597 
4.528 
1915 
4.273 
4.518 
4. 254 
4.650 
4.918 
4.579 
5.155 
5.079 
5. 294 
4.852 
5.237 
5.153 
4.896 
5.003 
5.257 
5.135 
4.933 
5.035 
5.108 
5.018 
5.117 
4.889 
5. 068 
5.921 
5.894 
7.950 
"5." 507 
5.516 
9.350 
6. 720 
7.316 
6.757 
4.796 
4.507 
3.678 
3.879 
3.733 
3. 623 
4. 958 
4.341 
4.807 
1916 
4. 085 
3.722 
4.140 
4.273 
4. 565 
4. 254 
4.652 
4.587 
4.533 
4.716 
4.487 
4.722 
4.757 
4.764 
4.72S 
4.541 
4. 462 
4.844 
4.8S1 
6.591 
4.823 
4.949 
5.542 
4.674 
5.408 
4. 423 
7. 185 
6. 704 
5.000 
5.679 
8.800 
5.335 
6. 026 
5.795 
Aver- 
age. 
3.993 
4.139 
3.942 
4.200 
4.211 
4.414 
4.496 
4.772 
4. 674 
4.776 
4.617 
4.753 
4.757 
4.736 
4.748 
4.795 
4.730 
4.698 
4. 940 
4.995 
5.805 
4.970 
4.919 
5.301 
4.S71 
5.548 
5.159 
7.313 
4.972 
5.860 
8.796 
5.769 
6. 312 
5. 772 
4.540 
4.294 
3. 632 
3.728 
3.620 
3-554 
4.854 
4.275 
5.009 
1 Data unmarked are 3-year averages; those marked with a dagger (f) are 2-year averages. 
