80 FLORA OF WORCESTER COUNTY. 



linearis Froel. 



Princeton and northward. 

 Bartonia Muhl. 



virginica (L.) BSP. 



Southbridge ; Worcester. 

 Menyanthes (Tourn.) L. Buckbean. 



trifoliata L. In bogs and shallow water. 



Nymphoides (Tourn.) Hill. Floating Heart, 

 lacunosum (Vent.) Fern aid. 

 Lake Quinsigamond. Gardner. 



APOCYNACE.E (DOGBANE FAMILY). 

 Vine a L. Periwinkle. 

 minor L. Myrtle. 



Templeton. Mr. P. Blodgett. 



Apocynum (Tourn.) L. Dogbane. Indian Hemp, 

 androssemifolium L. Spreading Dogbane. 



In fields and by roadsides. 



cannabinum L. Indian Hemp. In sandy soil, 



cannabinum, var. hypericifolium (Ait.) Gray. 

 Brookfield; Southbridge. Mr. R. M. Harper. 



ASCLEPIADACE^E (MILKWEED FAMILY). 



Asclepias (Tourn.) L. Milkweed. 

 tuberosa L. Butterfly-weed. 



In dry fields, not common. 

 purpurascens, L. Purple Milkweed. 



Along roadsides and in dry fields. 



incarnata, L. Swamp Milkweed. In swamps, common. 

 incarnata, var. pulchra (Ehrh.) Pers. With the last, 



syriaca L. Common Milkweed. In rich soil, common. 



