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, 

 Cuscuta arvensis, Rudbeckia hirta, Ambrosia artemisa 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 orientate, Hibiscus tri- 

 onum, Anthemis austriaca, Carduus acantkoides. 



