DESCRIPTION OF PLATES. 



Plate I. Two examples of different types of wheat having the same name. Natural 

 size. Fig. 1. — The type of a variety known as Early Ripe, from the Ohio State 

 Experiment Station. Fig. 2. — The type of the variety Early Ripe, from the 

 ( )klahoma Experiment Station. Fig. 3.— The type of a variety known as 

 Emporium, from the Washington State Experiment Station. Fig. 4. — The type 

 of the variety Emporium, from the Utah Experiment Station. 



Plate II. Three different types of wheat having the same name. Natural size. 

 Fie. 1. — A beardless, smooth-chaffed wheat, known as Velvet Chaff, from the 

 Utah State Experiment Station. Fig. 2.— A beardless, hairy-chaffed wheat, 

 known as Velvet Chaff, from the Colorado State Experiment Station. Fig. 3. — 

 A bearded, hairy-chaffed wheat, known as Velvet Chaff, from the Ohio State 

 Experiment Station. 



Plate III. Fig. 1.— Auricles and stipules of Avheat leaves. Enlarged seven times. 

 Showing point of juncture of blade and sheath of the leaf. No. 1. — The stem 

 removed to show the entire ligule. No. 2. — The leaf in natural position, with 

 the sheath clasping the stem. Fig. 2.— Types of wheat spikes. Natural size. 

 No. 1.— Spike beardless, nine centimeters long, very open, uniform, tip acute, 

 base tapering, flattened with the spikelets, and straight; glumes smooth. No. 

 2.— Spike bearded, eight centimeters long, crowded, clubbed, tip blunt, base 

 tapering, square and straight; glumes hairy. Nos. 3 and 4. — Spike of T. durum 

 shown in two positions to illustrate "flattened across spikelets." The diameter 

 of the spike through the spikelets (No. 3) is greater than across the spikelets 

 (No. 4.) Nos. 5 and 6. — Spike of T. sestivum shown in two positions to illustrate 

 "flattened with spikelets." The diameter of the spike through the spikelets 

 (No. 5) is less than across the spikelets (No. 6.) 



Plate IV. Different types of wheat spikelets. Enlarged five times. Fig. 1. — A nar- 

 row spikelet containing three grains with long basal hairs, and with long, smooth, 

 narrow outer glumes, each with a narrow keel and a long, acute beak; the flow- 

 ering glumes firmly attached, and with the awns of two of them broken off. 

 Fig. 2. — A broad spikelet containing rive grains with short basal hairs, and with 

 short, smooth, narrow outer glumes, each with a narrow keel and a very short, 

 blunt beak. The flowering glumes are firmly attached, and, while each has an 

 awn, these are so short that the spike would be called beardless. 



Plate V. Various types of culms, grain, and spikelets. Twice natural size. Fig. 

 l._Culm solid. Fig. 2.— Culm semisolid. Fig. 3.— Culm hollow. Fig. 4.— 

 Grain long, curved; brush short. Fig. 5.— Grain short, tip blunt, base pointed; 

 brush large, long. Fig. 6.— Grain medium length, straight; tip blunt, base 

 pointed; brush short. Fig. 7. — < J rain short; tip and base pointed; brush small, 

 long. Fig. 8.— Grain short, pear-shaped; tip pointed, base blunt; brush small, 

 long. Fig. 9.— Grain short, straight: base and tip blunt; brush large, long. 

 Fig. 10. — Section of grain showing angular cheek, with crease deep and narrow. 

 Fig. 11.— Section of grain showing plump cheek, witli crease deep and hroad. 



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