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CC. Awns wanting or few in the panicle. 
D. Lemma laterally beset with hairs at about its middle . . . Black Diamond. 141 
DD. Lemma glabrous. 
E. Grains glaucous Monarch Selection. 141 
EE. Grains not glaucous. 
F. Panicles narrow, short; plants semi-erect in early growth; grains 
black.., Joannette. 141 
FF. Panicles wide-spreading, long; plants erect in early growth; grains 
brownish black to brownish red. 
G. Grains brownish red; rhachilla usually glabrous. .. C. L 620. 142 
GG. Grains brownish black; rhachilla usually haired. 
H. Panicles extremely long, wide-spreading, and lax, the 
branches drooping from the middle outward; hairs of the 
rhachilla few and appressed; grains usually 15-18 mm. 
long Old Island Black. K2 
HH. Panicles medium long, stiff, the branches ascending; hairs 
of rhachilla numerous and erect ; grains usually 18-22 
mm. long North Finnish. 142 
BB. Grains light-colored, yellow to white. 
C. Lowest whorl of panicle branches usually issuing from a geniculate bend in 
the rhachis at which the nodal diaphragm is wanting or rudimentary. 
D. Panicles narrow, the branches sharply ascending; rhachis scarcely 
flexuous Garton 473. 143 
DD. Panicles wide-spreading, the branches stiff but not sharply ascending; 
rhachis remarkably flexuous Garton 691. 143 
CC. Lowest whorl of panicle branches issuing from a normal node. 
D. Panicles short, sparse; culms fine; plants extremely early in maturing. . 
Kherson, Early Champion, Sixty-Day. 143 
DD. Panicles medium to extremely long, more or less prolific; culms medium 
to large ; plants medium to late in maturing. 
E. Grains bright yellow. 
F. Basal hairs numerous. 
G. Basal hairs short (1-2 mm.); 3-grained spikelets numerous; 
panicles stiff, the branches ascending . . . Awnless Probsteier. 146 
GG. Basal hairs long (2-5 mm.); 3-grained spikelets seldom occur- 
ring; panicles lax, the branches drooping from the middle 
outward Japan Selection. 147 
FF. Basal hairs usually wanting, if present few and weak. 
G. Awns usually wanting; spikelets usually 2-grained; glumes 
extremely short (18-22 mm.) Golden Drop. 147 
GG. Awns numerous; 3-grained spikelets numerous; glumes of 
medium length (20-28 mm.). 
H. Awns usually present; spikelets usually 3-grained 
C. I. 603. 147 
HH. Awns numerous in the panicle, but frequently wanting in 
the spikelet; spikelets 2-3-grained Green Russian. 148 
EE. Grains white to yellowish white. 
F. Grains extremely short, outer grains usually less than 15 mm. 
G. Leaves, sheaths, and glumes a conspicuous light green at period 
of full heading; double-grains very numerous .... Canadian. 148 
GG. Leaves, sheaths, and glumes dark green at period of full 
heading; double-grains seldom occurring Tobolsk. 148 
