ON THE ASCLEPIADEJE. 



Si 



Masstz pollinis apice affixae, pendulae. 

 Stigma sub-muticum. 

 Folliculi graciles, lseves. Semina comosa. 

 Habitus. Caulis volubilis v. decumbens, apfyyllus, 

 articulatus, v. foliis oppositis distantibus. Flo- 

 res umbellati, laterales v. terminales. 

 Patria. India Orientalis, Nova Hollandia, et Af- 

 rica. 



Obs. To this genus belong Cynanchum viminale, 

 Linn. ; a species nearly allied to it from New 

 Holland, and New Caledonia ; and Asclepias 

 viminalis Linn., all of which I have exami- 

 ned. The probable species are, Asclepias 

 aphylla, T'bunb. prod. ; Asclepias stipitacea, 

 Forsk. Arab. 50. ; Cynanchum pyrotechnicum, 

 and perhaps also Asclepias aphylla, of the 

 same author. 



EUSTEGIA. 

 Char. Corolla rotata. 



Corona triplex ; singula 5phylla ; extima fauce 

 inserta laciniis limbi opposita ; reliqua ex- 

 tima. alternantia, antheris opposita, foliolis 

 medics tripartitis, intimce indivisis. 



A nth era membrana terminate. 



Massed pollinis apice attenuato affixae, pendulae. 



Stigma submuticum. 



Folliculi 



D 2 



