Artificial key to the weed seeds found in commercial seeds in Illinois and adjoining states . mothy Seed for Sale in Iowa. Bull. 88, Agricultural Experiment Station, 1906. Ames, Iowa. Pammel, L. H. The Weed Flora of Iowa. Bull. 4, GeologicalSurvey, 1905. Des Moines, Iowa. Palmer, E. L. A Seed Key to some Common Weeds and Plants, Pro-ceedings of the Iowa Academy of Science, 1916. Pipal, F. J. Red Sorrel and Its Control. Bull. 1917, IndianaAgricultural Experiment Station, 1916, LaFayette, Indiana. 14 Stewart, F. C. The Impurities of Clover Seed. Bull. 21,Agricultural Experiment Station, 1911. Am
Artificial key to the weed seeds found in commercial seeds in Illinois and adjoining states . mothy Seed for Sale in Iowa. Bull. 88, Agricultural Experiment Station, 1906. Ames, Iowa. Pammel, L. H. The Weed Flora of Iowa. Bull. 4, GeologicalSurvey, 1905. Des Moines, Iowa. Palmer, E. L. A Seed Key to some Common Weeds and Plants, Pro-ceedings of the Iowa Academy of Science, 1916. Pipal, F. J. Red Sorrel and Its Control. Bull. 1917, IndianaAgricultural Experiment Station, 1916, LaFayette, Indiana. 14 Stewart, F. C. The Impurities of Clover Seed. Bull. 21,Agricultural Experiment Station, 1911. Ames, Iovra. Westgate, J. LI. and Hillman, F. H. Cleaning Red Clover Seed. Dept. of Agriculture, Bull. 455, 1911. Y/ashington, Plate I How 1. Lepidium virginicum. Row 2. Plantago Rugelii. Bow 3. Solanum carolinense. Row 4. Setaria viridis. Row 5. Setaria glauca. Row 6. Polygonum pennsylvanicura. Plate II Row 1. Polygonum Convolvulus. Row 2. Plantago aristata. Row 3. Plantago lanoeolata. Row 4. Rumex crispua. Row 5. Rumex obtuaifoliua. Row 6, Rumex Acetosella. Illustrations Plate I. Plate n
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