CLASSIFICATION OF AMERICAN WHEAT VARIETIES. 181 



ventral diameter and are somewhat softer. In many instances the 

 varieties of poulard and durum are so near alike that it is difficult to 

 distinguish them. 



Only a few varieties of poulard wheat are cultivated in the United 

 States, and the grain of these is of no commercial value except as 

 feed for stock. The varieties grown can be distinguished by the ac- 

 companying key. 



KEY TO THE VARIETIES OF POULARD WHEAT. 



la. Spike Simple. 

 2a. Spike Awned. 



3a. Glumes Pubescent. 

 4a. Glumes White. 



5a. Kernels Red (Triticum turgidum jodurum Al.). 



Kernels Short to Midlong. Page. 



Spring Habit Clackamas 181 



lb. Spike Branched. 

 2a. Spike Awned. 



3a. Glumes Glabrous. 

 4a. Glumes White. 

 5a. Kernels White 



Kernels Short to Midlong. 



Spring Habit Alaska 182 



3b. Glumes Pubescent. 

 4a. Glumes Brown. 



5a. Kernels White ( T. t. mirabile Kcke.). 

 Kernels Mddlong to Long. 



Winter Habit. Titanic 182 



5b. Kernels Red ( T. t. linnaeanum AL). 

 Kernels Short to Midlong. 



Winter Habit Winter Alaska 183 



DESCRIPTIONS, HISTORY, DISTRIBUTION, AND SYNONOMY OF POULARD WHEAT 



VARIETIES. 



CLACKAMAS (CLACKAMAS WONDER). 



Description. — Plant spring habit, late, tall ; leaves pubescent ; stem white, 

 weak to midstrong; spike simple, awned, oblong, middense, nodding; glumes 

 glabrous with pubescent edges, white with bluish black edges, midlong, mid- 

 wide; shoulders narrow, oblique to elevated; beaks wide, 1 to 2 mm. long; 

 awns black, 5 to 18 cm. long; kernels red, midlong to long, hard, usually be- 

 coming starchy, broadly ovate, truncate at tip ; crease midwide, shallow ; cheeks 

 angular ; brush midsized, short. 



Clackamas differs from other varieties of poulard wheat grown in the United 

 States in having simple spikes. It differs from the old Rivet wheat of England 

 in having a spring habit and partly glabrous glumes. As grown commercially, 

 Clackamas is somewhat mixed with common wheat and also contains several 

 other types of simple-spiked poulard wheat. 



History. — The origin of this variety is not known. Seed of the strain above 

 described was obtained in 1918 from New Mexico, where it has been grown 

 to a considerable extent for several years, apparently without a name. A wheat 

 which apparently is identical with the above has been grown in Clackamas 

 County, Oreg., for several years under the name Clackamas Wonder. 



Distribution. — Grown in New Mexico and Oregon. 



