DESCRIPTION OF PLATES. 19 



Fig. 12. — Section of grain showing plump cheek, with crease medium deep and 

 narrow. Fig. 13. — Portion of spikelet showing rachilla and arrangement of 

 glumes. Fig. 14.— Simple spikelet, beardless, spreading; glumes hairy, medium 

 length; beak short and blunt. Fig. 15.— Simple spikelet, beardless, spreading 

 widely; glumes smooth, short; beak short and blunt. Fig. 1(3. — Simple spikelet, 

 bearded, spreading; glumes smooth, short, attachment weak; beak long and 

 acute. Fig. 17. — Simple spikelet. beardless, narrow; glumes smooth, medium 

 length; beak medium and blunt. Fig. 18. — Simple spikelet, beards broken off, 

 narrow; glumes smooth and long; beak long and acute. Fig. 19. — Compound 

 spikelet from " seven-headed " wheat; bearded; glumes smooth, medium length, 

 broad; beak short and acute. 



Plate VI. Outer glumes from various types of wheat spikelets. Enlarged seven 

 times. Fig. 1. — Glume smooth, medium size; keel narrow; beak short and 

 blunt; shoulder medium and square; auricle medium, notch deep. Fig. 2. — 

 Glume smooth, broad, medium length; keel narrow; beak short and blunt; 

 shoulder broad and sloping; auricle wanting. Fig. 3. — Glume similar to fig. 2, 

 but from the other side of spikelet. Fig 4. — Glume smooth, broad, and short; 

 keel narrow; beak short and acute; shoulder medium and round; auricle sharp; 

 notch medium. Fig. 5. — Glume smooth, medium size; keel narrow; beak 

 medium and acute; shoulder narrow and sloping; auricle wanting. Fig. 6. — 

 Glume smooth, long, and broad; keel narrow; beak long and acute; shoulder 

 narrow and sloping; auricle wanting. Fig. 7. — Glume smooth, medium size; 

 keel narrow; beak long and acute; shoulder medium and round; auricle sharp; 

 notch shallow. 



Plate VII. Outer glumes from various types of wheat spikelets. Enlarged seven 

 times. Fig. 1. — Glume smooth, broad, and long; keel broad; beak short and 

 acute; shoulder medium and sloping; auricle wanting. Fig. 2. — Outer glume 

 from an apical spikelet, notched and without a keel. Fig. 3. — Outer glume 

 from an apical spikelet, notched and keeled. Fig. 4. — Glume hairy, medium, 

 and short; keel narrow; beak long and acute; shoulder medium and square; 

 auricle wanting. Fig. 5. — Glume smooth, medium sized; keel narrow; beak 

 short and blunt; shoulder medium and square; auricle medium; notch deep. 

 Fig. 6. — Glume hairy, short, and broad; keel narrow; beak short and acute; 

 shoulder broad and round; auricle wanting. 



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