By Mr. Theodore Hartweg. 



121 



Solanum sp. 

 Lupinus Hartwegii 

 — leptocarpus 

 Anemopsis californica 

 Cuphea sp. 

 Heliotropium curassa 1 

 Verbena incana 

 Parkin sonia aculeata 



Onagracea 



Trifolium involucratum 

 Mimosea 



Ipomaea rubrocserulea 



— Horsfallii 



— longifolia 

 Convolvulus 3 species 

 Berberis tenuifolia 

 Mimosa filicina. 



Prosopis dulcis 



On the 26th of February, 1838, 1 proceeded from Zacatecas over 

 the high table land to San Luis Potosi and thence to the Rancho 

 de los Gallitos. Near San Luis Potosi I found Berberis trifoliata in 

 great abundance, forming a shrub 4 to 5 feet high ; it was then just 

 coming intoflower, and all my efforts to find seeds were useless ; 

 but I afterwards received a large supply through the kindness of the 

 bailiff of the Hacienda del Espiritu Santo, and it has since been 

 abundantly raised and distributed at the Garden. The Rancho de 

 los Gallitos, being situate on the eastern declivity of the great 

 table land, in a narrow valley, enjoys a delightful temperature, and is 

 surrounded by constant verdure and noble forests of Oaks. It was 

 near this station I found the striking Berberis Hartwegii with its 

 long spikes of flowers and pinnate leaves. This desirable species 

 still remaining to be imported, I shall describe its locality par- 

 ticularly, for its seeds will amply remunerate any traveller that may 

 land at Tampico and proceed to San Luis Potosi or Zacatecas. 

 Before reaching the valley of Los Gallitos, on the ascent from Santa 

 Barbara, there is a bluff rock on the right hand side of the road, 

 called " El Contadero, " with a small chapel hewn in the rock, and 

 always gaily adorned with flowers and candles by the passers by ; 

 this place is held in the deepest reverence by the Indians, from the 

 circumstance of Nuestra Senora de Guadalupe being said to have 

 appeared to several of them, and they cannot pass this place with- 

 out paying homage to their protectress saint. It was at the foot 

 of this rock that I found Berberis Hartwegii. 



After exhausting the resources of the last station and despatch- 

 ing my collections to Tampico I returned to Zacatecas, where I 



