BY JOHN H. SEARS. 97 



ORDER Malvaceae. 



Common Mallow, Malva rotundifolia, grows near dwellings and in 

 garden paths. European. 



Indian Mallow, Abutilon Avicennce, a tall, coarse plant, escaped from 

 gardens. From India. 



ORDER Geraniacece. 



Wood- Sorrel, Oxalis stricta, grows around dwellings and in gar- 

 dens. Common. 



ORDER Anaoardiacese. 



Poison Ivy, Ehus Toxicodendron, stone walls, climbing on trees, and 

 in sandy fields. 



ORDER Leguminosoe. 



Woad Waxen, Genista tinctoria. This plant was introduced from 

 Europe, prior to 1628, as a dye plant. It is fast covering the unculti- 

 vated pastures in all parts of the county. It is a native of central 

 and southern Europe. 



Zigzag Clover, Trifolium medium, forms dense patches in Danvers 

 and Salem. European. 



Yellow or Hop Clover, Trifolium agrarium, sandy fields and road- 

 sides. European. 



Black Medick, Medicago lupulina, abundant in grass lauds. Euro- 

 pean. 



Vetch, Vicia Cracca, a very pretty plant, but a bad weed in mowed 

 land, as it is hard to exterminate. Abundant at Danversport. 



Wild Indigo, JBaptisia tinctoria, abundant in old pastures. 



Ground Nut, Apios tuberosa, grows on the edges of fields, and on 

 walls and fences, climbing on the grass. 



ORDER Rosacese. 



Canada Burnet, Poterium Canadense, a weed in fresh meadows and 

 on river banks. Common in Danvers, Topsfield and Ipswich. 



Cinque-foil, Potentilla Norvegica, grows in fresh meadows. It is a 

 coarse weed. 



High Blackberry, Bubus villosus, grows on the borders of thickets 

 and wet meadows. 



