AGRICULTURAL SEEDS, SELECTION AND TESTING 267 



2. West European (Great Britain, N. France, Netherlands). Alope- 

 curus agrestis, Carum petroselinum. 



3. North American (United States and Canada). Panicum capillare, 

 Cusciita arvensis, Rudbeckia hirta, Ambrosia artemis&folia. 



FIG. 120. Mature dodder (Cuscuta) on an alfalfa stem. (After Mairs, T. I.: 

 Some Soiling Crops for Pennsylvania, Bull. 109, Pennsylvania State College Agricultural 

 Experiment Station, 1911, p. 13.) 



4. Australian (Australia and New Zealand.) Agrostis Fosteri, Dan- 

 thonia semi-annularis. 



5. Asiatic (Syria, Turkestan). Silene dichotoma, Saponaria vaccaria, 

 Glaucium corniculatum, Berteroa incana, Erysimum orientale, Hibiscus tri- 

 onum, Anthemis austriaca, Carduus acanthoides. 



