PENTANDRIA DIGYN'IA. Goiiolobium. 179 



Vincefoxicnm gonocarpus. Walt. fl. car. 104, 

 Jn shady woods of Carolina and Virginia. Ij . June. 

 V. V. Flowers dark purple or dirty yellow. 



2. O. sarmentis petiolisque hirsutissimis, foliis sensim acu- hirsutum. 



minatis utrinque pubescentibus, corollae laciniis ob- 



longo-ovalibus obtusis, folliculis oblongis muricatis. — 



Mich.Ji. arner. 1. p. lig. 

 Vincetoxicum acanthocarpos. IFalt.Ji. car. 104. 

 In hedges, near rivulets : Pensylvania to Carolina. 2/ . 



June, July. t'. v. Flowers dark purple. 



3. G. sarmentis glabriusculis, foliis subconoideo-cordatis Iceve. 



sensim acutis nervis subtus puberulis, floribus glabris, 

 corollse laciniis ovali-oblongis obtusiusculis, folliculis 

 laevibus. Mich.Ji. amer. l.p. IIQ. 



Cynanchum carolinense. Jac. ic. 1. t. 342 ? 



In hedges on the banks of the Mississippi. %. June. 

 V. V. s. fr. Flowers dark purple. 



Cynanchum ohHijuum. Jacq. ic. 2. t. 241. probably is 

 another species of this genus. I have seen the plant 

 in flower, but without fruit, in a cultivated state, but 

 never observed it growing spontaneously ; consequently 

 I shall omit it, as a douotful North American plant. 



223. APOCYNUM. Gen. pi. 426. 



1. A. caule rectiusculo patente, foliis ovatis utrinque gla- androscsmifo- 



bris, cymis lateralibus et terminalibus glabris, coroUis Hum. 

 limbo patentibus.— ^i//ci. sp. pi. l.p. 125g. 



Icon. Dod. viem. t. 50. 



In fields and along the edges of woods : Canada to Ca- 

 rolina, y. . July. V. V. Flowers pale red with darker 

 stripes. 



2. A. caule rectiusculo, foliis oblongo-ovalibus subtus can- cannalinum, 



dicante-pubescentibus, paniculis pubescentibus, corol- 



lis limbo eiecu^.— lVilld. sp. pi. 1. p. 125y. 

 Icon. Pluk. aim. t.l3.f.l. 

 In sandy fields and woods j common. 1/. June, July. 



V. V. Flowers yellowish-green, small. The plant is 



generally called Indian Hemp. 



3. A. caule erectiusculo, foliis oblongis cordatis glabris, cy- hypericifo- 



mis folio brevioribus. IVilld. sp. pi. l.p. 1 260. dun. 



A. sibiricum. Jacq. hort. 3. /. G6. 



On the gravelly shores of rivers : New York to Vir- 

 ginia j scarce. 7/. July, Aug. v. v. Flowers very 

 n3 



