504 



POLYGONACEiE. 



[Hypogynous Exogens. 



GENERA. 



I. EaiOGONEiE. — Bentk- 



Pterostegia, Fisch. et M. 

 Mucronea, Benth. 

 Chorizanthe, R. Br. 

 Eriogonum, L. C, Rich. 

 Espinosa, Lagasc. 



II. Polygone.t:. — Benth 



Oxyria, Hill. 



Donia, R. Br. 

 Rheum, Linii. 



Rhabarbarum, Tourn. 

 Konigia, L. 

 Polygonum, L. 



Bistorta, Toumef. 



Amblygmion, Meisn. 



Lagunea, Lour. 



Persicaria, Toumef. 



Towara, Adans. 



Anterior on, Rafin. 



Echinocaulon, Meisn. 



CephalopJiilon, Meisn. 



Didymocephalon, Meis 



Corymbocephalon, Mn 



Aconogonon, Meisn. 



Avicularia, Meisn. 



Tiniaria, Meisn. 

 Fagopyrum, Toumef. 

 Ampelygonum, Lindl. 



Oxygonum, Biirch. 

 Calligonum, L. 



Polygonoides, Tournef. 

 Calliphysa, Fisch. et Mey. 

 Pterococcus, Pall. 



Pallasia, Linn. fil. 

 Coccoloba, Jacq. 

 Muhlenbeckia, Meisn. 

 Ceratogonum, Meisn. 

 Emex, Neck. 



Vibio, Mdnch. 



Centropodium, Burch. 

 Rumex, L. 

 Tragopyrum, Bieb. 

 Gonopyrum, Fisch. 



Polygonella, Mx. 



Lyonia, Raf. 

 Atiaphaxis, L, 



III.Triplare.e.— Mej/^r. 

 Podopterus, H. et B. 

 Rupprechtia, Meyer. 

 Triplaris, L, 



Blochmannia, Weigelt. 



Vclasquezia, Bertol. 

 IV. Brunniche^. — 



Meisn. 

 Brunnichia, Banks. 



Fallopia, Adans. 

 Antigonon, EndL 



Numbers. Gen. 29. Sp. 490. 



NyctaghiacecB. 

 CJienopodiacece. 

 Position. — Illecebracese. — Polygonace^ — Caryophyllaeeae . 



