51 



ASCLEPIADACEAE 



Asclepias [Tourn.] L. Milkweed. Silkweed. 

 tuberosa L. Butterfly-weed. Pleurisy-root. 

 purpurascens L. Purple Milkweed. 

 incarnata L. Swamp Milkweedr 



incarnata L. var. pulchra (Ehrh.) Pers. Springfield, L. Andrews. 

 cannabinum L. Indian Hemp. 

 syriaca L. Common Milkweed or Silkweed. 

 amplexicaulis Sm. 



phytolaccoides Pursh. Poke Milkweed. 

 quadrifolia Jacq. 

 verticiVata L. 



CONVOLVULACEAE 



Ipomoea L. Morning Glory. 



purpurea (L.) Roth. 

 Convo}vu]us [Tourn.] L. Bindweed. 

 spHhamaeus L. 



jAPONicus Thunb. Escaped from cultivation. 

 sepium L. Hedge Bindweed. 

 Cuscuta [Tourn.] L. Dodder. 



Epithymum Murr. Occasionally found parasitic on clover and 

 alfalfa, causing " lodging " of the host plant. In- 

 troduced in clover seed, but not persisting. 

 arvensis Beyrich. Occasionally affecting alfalfa and clover. 

 Cronovn Willd. Common on alders, etc., but observed growing 

 on raspberry bushes. 



POLEMONIACEAE 



PWoar L. 



paniculata L. Persistent and occasionally escaped. 

 stolonifera Sims. Amherst, E. N. Brown. 



HYDROPHYLLACEAE 



Hydrophynum [ToumJ L. Waterleaf. 

 virginianum L. Rare. 



