G3G 



polemoniace;e. 



[Perigynous Exogens. 



ance of which either Borageworts, Gentianworts, Dogbanes, or Figworts form a part, 

 and that in reality its most immediate affinities are with Bindweeds on the one hand, 

 and Hydrophyte on the other. 



Very abundant in both North and South America, in temperate latitudes, particularly 

 on the north-west side. It is stated by Richardson, that the most northern limit in 

 North America is b\".—Edin. Phil. Journ, 12. 209. In Europe and Asia they are much 

 more uncommon. They are unknown in tropical countries. 



The Greek Valerian, Polemonium caeruleuni, is a mucilaginous, nauseously bitter plant. 

 In Siberia poultices are prepared from its leaves, and thought serviceable in syphilitic 

 sores The Russians fancy that a decoction of it is useful in hydrophobia. 



C'aldasia, Willd. 



Bonplandia, Cav. 

 Phlox, Linn. 



? Dupratia, Raf. 

 Collomia, Nutt. 

 Gilia, Ruiz et Pav. 



Cnllomioides, Endl. 



Htigelia, Benth. 



GENERA 

 Welwitschia, Reichnb. pactylophyllum, Benth 

 Curtoisia, Rchb. 



Linanthus, Be nth. 

 Leptosiphon, Benth. 



Leptodactylon, Hook. 

 Dianthoides, Endl. 



Fenzlia, Benth. 



Rossmcesllera, Rchb. 



Ipomopsis, L. C. Rich. 



Ipomeria, Nutt. 



Brickelia, Raf. 

 Navarretia, Ruiz et Pav. 



Mgochloa, Benth. 

 Polemonium, Tournef. 

 Hoitzia, Juts. 



Laeselia, Linn. 



Royena, Houst. 

 Schizocodon, Zucc. 

 Cantua, Jux.s. 



Periphragmos, R. et P. 

 ? Bronnia, H. B. K. 

 Cobaea, Cav. 

 ? Cyananthus, Wall. 



Numbers. Gen. 17. Sp. 104. 



Hydropli yllacece. 

 Position. — Convolvulacese.— Polemoniace<e. — Solanaceae. 



Gentianacece. 



Dr. Asa Gray, who has examined complete specimens of Bronnia, regards it as 

 being the same genus as Fouquiera, and stations it near Crassulaceae. 



