Plants of Europe imturalizul in the United States. 153 



87 Conium maculatum. Here and there in the northern states. 



88 Ornitliogalum umhcllatum. Spreading gi-eatly in the northern 



states. 



89 Polygonum orientale. Southward and westward. 



90 Saponaria officinalis. Here and there — common. 



91 Spergula arvensis. Northern states. 



92 Ranunculus arvensis. Do. 

 93 repcns. Do. 



94 Mentha viridis. In many localities. 



95 piperita. In Carolina, here and there. 



96 Thymus serpyllum. In Pennsylvania, common. 



97 Melissa officinalis. Here and there. 



98 Lepidium officinale. Pennsylvania. 



99 Thlaspi arcense. .In many localities. 



100 campcstre. Do. 



101 Sisymbrium officinale. Do. 



102 Malva roiundifolia. Very rarely southward — common northward. 



103 Fumaria officinalis. Very confined localities — Carolina. 



104 Genista tinctoria. New England. 



105 Vicia saliva. Here and there. 



106 Melilotus officinalis. Do. 



107 Trifolium procumbens. Very common southward, and beginning 



to become universal. 



108 agrarium. Confined to localities northward. 



109 Medicago lupulina. Near Carlisle and other localities. 



110 intcrtcxta. Southwardly only. (S. Carol.) 



111 Cichorium intybus. Northwardly, in some localities. 



112 Apargia autumnalis. New England. 



113 Sonchus arvensis. Do. 



114 Cynara scolymus. Virginia. (Nuttall.) 



115 Inula helenium. Along the Ohio hills in great quantities, and 



elsewhere, here and there. 



116 Senecio vulgaris. New York and New England. 



117 Euphorbia helioscopica. Shores of Lake Erie and elsewhere. 



118 Amaranthus Blitum. Northwardly. 



119 Xanthium spinosum. Southwardly, as far as Washington. 



III. Introduced only in the vicinity in which they are or 

 were cultivated. 



120 Ligustrum vulgare. 



121 Syringa vulgaris. 



122 Phalaris canaricnsis. 



123 Nicotiana rustica. 



