93 



39. Setaria, Beauv. 



verticillata, Beauv. 



Gardens and waste places. Common. July. Na- 

 tive of Europe, 

 glauca, Beauv. (Fall Grass.) 



Stubble-fields and meadows. Common. Auf?. Na- 

 tive of Europe, 

 viridis, Beauv. (Green Foxtail.) 



Cultivated lots, &c. Frequent. July. Native of 

 Europe. 



40. Cenchrus, L. 



tribuloides, L. (Hedgehog Grass. Bur-Grass.) 

 Wharves at New Castle ; Collins' Beach, &c. Not 

 common. Aug. 



41. Tripsacum, L. (Gama Grass. Sesame Grass.) 



dactyloides, L., var, monostachyurn, Gr. 



Ro^ky hillsides above Allapokas. Rare. July. 



42. Erianthus, Michx. 



alopecuroides, Ell. 



Swamps; Newark, &c. Rare. Sept. 



43. Andropogon, L. 



furcatus, Miihl. 



Sandy soil near lower dam, Brandywine. Frequent. 

 Aug. 

 scoparius, Michx. (Indian Grass.) 



Sterile fields. Common. Aug. 

 Virginicus, L. 



Sterile fields. Frequent. Sept. 

 macrourus, Michx. 



Low sterile soil. Frequent. Sept. 



44. Sorghum, 1 Pers. (Andropogon, L.) 



nutans, Gray. 



Old sterile fields, &c. Frequent. Aug. 



1 The common broom corn and the Chinese sugar-cane are plants be- 

 longing to this genus. 



Zea mays, Linn., is the common Indian corn. 



