No. 14.] FLOWERING PLANTS AND FERNS. 32I 



(Weatherby), Windsor (H. S. Clark, Weatherby & Bissell), 

 Southington (Andrews), Litchfield (C. K. Averill), Danbury 

 (F. Mills), Salisbury (Mrs. C. S. Phelps). July — Aug. 



APOCYNACEAE. DOGBANE FAMILY. 

 VINCA L. Periwinkle. 

 Vinca minor L. (smaller). 



Common Periwinkle. Blue Myrtle. 



Occasional. Roadsides near dwellings and about ceme- 

 teries, escaped from cultivation. April — May. Naturalized 

 from Europe. 



Rarely occurs with white or variegated flowers or leaves. 



APOCYNUM L. Dogbane. Indian Hemp. 



Apocynum androsaemifolium L. (having leaves like Hyperi- 

 cum Androsaemum, the Tutsan). 

 Spreading Dogbane. Honey-bloom. 



Frequent. Fields and roadsides. June — Aug. 

 The plant is medicinal. 



Apocynum medium Greene (intermediate). 

 Apocynum Milleri Britton. 

 Apocynum urceolifer G. S. Miller. 



Occasional or frequent. Dry fields, roadsides and open 

 woods. June — Aug. 



Very variable and several forms have been described. 



Apocynum cannabinum L. (hemp-like). 

 American, Canadian or Indian Hemp. 



Frequent. Fields, thickets and roadsides, often in sterile 

 soil. June — July. The so-called Apocynum album Greene 

 is a dwarfed or prostrate form of this species growing on 

 rocky or sandy banks of streams or ponds, and is occasional. 

 The fibre has been used as hemp. The rootstock of this 

 and closely allied species has active medicinal properties and 

 is officinal. 

 Apocynum cannabinum L., var. pubescens (R. Br.) DC. 

 (downy). 

 Apocynum pubescens R.Br. 



