430 THE PLANT LIFE OK MARYLAND 



Polygonum hydropiper L. Smartweed. 



Coastal Zone. 



Polygonum persicaria L. 



Coastal Zone, naturalized from Europe. 



Polygonella articulata (L.) Meisn. Coast Jointweed. 



Coastal and Midland Zones; in dry forests, preferring sandy soil. 

 Worcester County, near Wagram (1159). 



CHENOPODIACEAE. 



Chenopodium album L. Lamb's Quarters. 



Throughout the state; in cultivated grounds; common. Introduced from 

 Europe. 



Chenopodium murale L. Nettle-leaved Goosefoot. 



Throughout the state; in cultivated grounds frequent. Introduced from 

 Europe. 



Chenopodium anthelminticum L. Wormseed. 



Throughout the state; in cultivated grounds; common. Introduced from 

 Europe. 



Atriplex hastata L. Halberd-leaved Orache. 



Coastal Zone; growing on the strand and in salt and brackish marshes; 

 common. 



Atriplex rosea L. Red Orache. 



Baltimore County, Canton; on ballast (Robert K. Miller). 



Salicornia herbacea L. Slender Grasswort. 



Coastal Zone; in salt and brackish marshes; common. 



Salsola kali L. 



Coastal Zone; on dunes and strand; frequent. 



AMARANTHACEAE. 



Amaranthus retroflexus L. Rough Pigweed. 



Throughout the state; in waste grounds; common. Introduced from 

 South America. 



Amaranthus spinosus L. Spiny Amaranth. 



Throughout the state; in cultivated grounds; common. Introduced from 

 South America. 



Amaranthus blitoides S. Wats. Prostrate Amaranth. 



Baltimore County, Canton; on ballast (Robert K. Miller). 



Acnida cannabina L. Water-hemp. 



Coastal Zone; in salt and brackish marshes; frequent. 

 Caroline County, Dover Bridge (2066). 



