176 



DISTRIBUTION OF PLANTS. 



The following tribes of plants were not met with ; but growing 

 in an adjoining region, either lower down or higher up, are probably 

 not altogether excluded from the intervening limits : 



Papaveracese (seen lower down), 

 Tiliacea3 (lower down), 

 Ampelidacea3 (lower down), 

 Zygophyllacefe (lower down), 

 Rhaninaceae (lower down), 

 Terebinthaceae (lower down), 

 The tribe Mimoseae (lower down), 



Lythracea3 (lower down), 



Paronychiaceae (higher up), 



The tribe Saxifrages; (higher up), 



Primulaceos (lower down), 



Gentianacese (higher up), 



The tribe Antirrhineae (lower down), and 



Typhaceae (lower down). 



The absent Families have been already enumerated in a general 

 List ; but those whose absence is especially significant and character- 

 istic, may be here specified : 



ViolaceEe, 



Cistaceie, 



Droseraceae, 



Hypericaceae, 



Aceraceae, 



the genus Spiraea, 



the genus Fragaria, 



the genus Potentilla, 



the genus Rosa, 



the genus Fuchsia, 



Melastoniaceae, 



Myrtaceae, 



AraliaceEe, 



Cunoniacefe, 



Escallonieae, 



Caprifoliaceae, 



Loranthaceae, 



the tribe Cynareae, 



the tribe Nassauvieae, 

 Ericacese, 



the tribe Apocyneas, 



Proteaceae, 



the tribe Coryle^, 



the tribe Betulineae, 



Coniferae proper, 



Smilaeeae, and 



Araceae. 



The following plants were found growing in the Peruvian moun- 

 tain-region ; between the commencement of the rains and the termina- 

 tion of cultivation, or from the elevation of about five thousand feet 

 to that of ten thousand: 



Clematis (No. 15). A vine ; pubescent ; leaves triternate, the leaflets small, dentate ; 



broad floral-leaves; the flowers greenish. Frequent in the upper portion of the region; 



in the Canta Valley along the ascent to Culuay, and in the Chancay Valley at Banos.* 

 Thalictrum (No. 6). Frequent, according to my recollection (when writing my journal), 



in the Canta Valley around Obrajillo. No specimens. 

 Ranunculus? (No. 26). Two to three feet, and spreading; the upper leaves incised, but 



opposite; carpels oblong, with the point inflexed. In the upper portion of the region, 



along the ascent to Culuay. 



* Sisymbrium (athrocarpum of Gray; No 10; near No. 6 Mount Rainier ridge in Oregon), 

 and S. canescens. Leaves bipinnatifid. From Obrajillo to the Paramera; apparently 

 indigenous, but occasionally seen growing as a weed in cultivated ground. 



Brassica oleracea, (bis Lower Peru, and No. 1 Europe) ; the cabbage. Seen under culti- 

 vation in the lower portion of the region. 



