. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 1074 Washington, D. C. Issued November 8, 1922; revised August, 1923 CLASSIFICATION OF AMERICAN WHEAT VARIETIES By J. ALLEN CLARK, Agronomist in Charge, JOHN H. MARTIN, Agronomist, Western Wheat Investigations, and CARLETON R. BALL, Cerealist in Charge, Office of Cereal Investigations, Bureau of Plant Industry CONTENTS Necessity for a Classification of Wheat. 1 Previous Investigations 2 Foreign Classifications 3 American Classifications 7 Summary of Previous Classifi
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 1074 Washington, D. C. Issued November 8, 1922; revised August, 1923 CLASSIFICATION OF AMERICAN WHEAT VARIETIES By J. ALLEN CLARK, Agronomist in Charge, JOHN H. MARTIN, Agronomist, Western Wheat Investigations, and CARLETON R. BALL, Cerealist in Charge, Office of Cereal Investigations, Bureau of Plant Industry CONTENTS Necessity for a Classification of Wheat. 1 Previous Investigations 2 Foreign Classifications 3 American Classifications 7 Summary of Previous Classifications . 9 Present Investigations 10 Classification Nurseries 11 Preparing Descriptions, Histories, and Distributions 15 Varietal Nomenclature 17 The Wheat Plant 22 Morphological Characters 23 Physiological Characters 47 Page Classification of the Genus Triticum . 48 Key to the Species or Subspecies . 50 Common Wheat 50 Club Wheat 172 Poulard Wheat ' 180 Durum Wheat 183 Emmer 193 Spelt 195 Polish Wheat 197 Einkorn 198 Unidentified Varieties 199 Estimated Acreage of Varieties 207 Literature Cited 219 Index to Varieties and Synonyms. . .231. WASHINGTON GOVERNMENT PRINTING OFFICE 1922. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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