Field Museum of Natural History 



THE ORIGIN AND CLASSIFICATION OF WHEATS. 



The three primitive wheats (Nos. 3, 4, 5) are considered by 

 one authority to be representative respectively of three groups, 

 each derived from a different wild prototype, viz., Einkorn 

 group (No. 4 only); Emmer group (Nos. 5, 8, 9, 10); Spelt 

 group (Nos. 6, 11, 12-17). 



The generally accepted botanical classification of wheats is 

 as follows: Einkorn (Triticum monococcum) , Polish "Wheat (Tri- 

 ticum polonicum i. Wheat and Spelt (Triticum sativum), the latter 

 subdivided into three races, viz., Spelts (T. spelta), Emmers (T. 

 dicoccum), and Wheats ( 7'. tvnar), the last comprising four sub- 

 races: Poulard Wheat (T. turgidum), Durum Wheat (T. durum), 

 Club Wheat (T. compactum), and Common Wheat (T. aestivum I . 

 with numerous varieties. 



The exhibits in the Field Museum of Wheat and of other 

 Cereal Grasses are to be found in the Department of Botany, 

 Halls -•"> and 28, on the second floor. 



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