A Classification of the Varieties of Cultivated Oats 135 
PAGE 
FF. Grains medium to extremely long, outer grains usually exceeding 
15 mm. 
G. Awns usually present and geniculate. 
H. Basal hairs numerous, long (2-5 mm.), bushy; grains 
rather short (15-18 mm.); spikelets 2-3-grained 
Silvermine Selection. 149 
HH. Basal hairs wanting, or few, weak, and short (1-2 mm.); 
grains long (18-22 mm.); spikelets usually 2-grained 
C. I. 602. 149 
GG. Awns wanting to numerous in the panicle, seldom geniculate. . 
H. Basal hairs long (3-6 mm.), numerous Early Dakota. 150 
HH. Basal hairs short or wanting. 
I. Panicles long, lax, spreading, the branches often drooping 
from the middle outward. 
J. Awns wanting or few in the panicle Irish Victor. 150 
JJ. Awns numerous in the panicle. 
K. Grains medium long (16-19 mm.) . .Danish Island. 150 
KK. Grains extremely long (18-22 mm.) 
Early Gothland. 151 
II. Panicles short to medium long, stiff, compact, the 
branches ascending. 
J. Awns wanting or few in the panicle Belyak. 151 
JJ. Awns few to numerous in the panicle. 
K. Rhachilla usually sparsely haired; lemma scarcely 
concave in the region of the awn; awns few in 
the panicle. 
L. Grains short-pointed Silvermine. 151 
LL. Grains long-pointed Scottish Chief. 152 
KK. Rhachilla usually glabrous; lemma concave in the 
region of the awn; awns numerous in the 
panicle. 
L. Basal hairs usually present, short but bushy 
and prominent June. 152 
LL. Basal hairs wanting or weak and inconspicu- 
ous. 
M. Awns usually strongly twisted; 3-grained 
spikelets predominating 
Swedish Select, 153 
MM. Awns straight or somewhat twisted; 2- 
grained spikelets predominating 
Lincoln. 154 
Descriptions of varieties 
C. 7. 10 606 (Plate IX, 3, and fig. 24).— Culms spreading in early growth, 
but later erect from a somewhat decumbent base, small, stiff, glabrous; 
sheaths dark green and glaucous at period of full heading; leaves colored as 
the sheaths, narrow and fine, margins glabrous; panicles narrow, stiff, the 
branches slightly drooping from the middle outward; spikelets usually 
2-grained; glumes dark green and somewhat glaucous at period of full 
heading, 20-25 mm. long, 7-8-nerved; grains black to brownish black, 
°0ffice of Cereal Investigation, United States Department of Agriculture. 
