11 



LEGUMINOSAE. 



Vtda xfitira. L. Common Vetch or Tare 



It is about the only really troublesome Leguminous plant we 

 have, and. like Corn Cockle, is abundant in grain fields. The 

 seeds are somewhat larger than Corn Cockle and smooth. In 

 Europe it is largely used as a forage plant and greatly prized. 

 (Kraft, 1.) 



ROSACEAE. 



<GL^ Geum, Album, Ginelin. White Avens. 



Becoming abundant along roadsides and borders of woods. 



Potentilla norvegica, L. 



Common in waste places, fields and gardens. 



Agrimonia eupatoria, L. Agrimony. 



Common along roadsides, abundant in Europe, and trouble- 

 some in Southern Russia (Koppen), and especially as the fruits 

 fasten themselves to the "fleece of sheep. Baron von Mueller 

 reports it as common in Australia. 



Rosa blanda, Ait. Early Wild Rose. 



Sometimes common in grain fields, where it causes annoyance 



in harvesting. 



OXAGRARIEAE. 



Oenothera bieunis, L. Common Evening Primrose. 

 Iu fields and waste places in a rather loamy soil. It is well 

 known in Europe, where it has become naturalized. 

 Oenothera rhombipetala. Xutt. Evening Primrose. 

 Especially common on sandy prairies. 



CUCUEBITACEAE. 



Sicyos angulatus, L. One Seeded Star Cucumber. 

 Along borders of streams and in moist places. 



FICOIDEAE. 



Mollugo verticillata, L. Carpet Weed. 



Common in dry fields, an immigrant from the South. 



UMBELLIFEEAE. 



Oonium maculatum, L. Poison Hemlock. 



Xot particularly troublesome as a weed, but from the fact that 



