159 



2. Trevoa trimrma, {Gill et Hook.); glabra, foliis ellipticis 

 crenato-serratis trinerviis subtus concoloribus. 



Hab. In planitie " Maypu" prope "el Peral," in Chile: 

 alt. 2000 ad 2500 ped. 



Spines rather shorter than in the preceding. Leaves 

 larger. Branches and spines green. 



[TAB. XL VI. XL VII. XLVIIL XLIX.] 



ON THE SPECIES OF THE GENUS VERBENA, 

 AND SOME NEARLY ALLIED GENERA, 



Found by Dr. Gillies in the extra tropical parts of South 



America. 



The temperate parts of South America appear to be par- 

 ticularly abundant in the genus Verbena^ and it may probably 

 be there considered to have its maximum. Fourteen species 

 are enumerated by Humboldt and Kunth in the Nova Genera 

 et Species Plantarum, of which 13 are new. Forty-five 

 species are described in the Systema Vegetabilium of Pro- 

 fessor Sprengel, of which 32 are natives of various parts of 

 South America. Dr. Gillies, whose researches were princi- 

 pally directed to the vicinity of Mendoza, in lat. 33" south, 

 but which also extended to Buenos Ayres on the one hand, in 

 south lat. 36°, and on the other to the western or Chilian 

 side of the Cordilleras, reckons 24 species in his Herbarium, 

 of which 18 have been hitherto unnoticed by preceding 

 botanists. An account of them cannot but be acceptable to 

 the systematic botanist. Two of the species, V. officinalis 

 and V. bonariensis, are found in other and very distant 

 countries : the rest appear to belong exclusively to the 

 American continent in the southern hemisphere. To these 

 I have added species of the nearly allied genera, Lippia, 

 Priva (Castelia of Cavanilles,) and a new genus, found in the 

 same countries, and by the same gentleman. 



VOL. I. M 



