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PREFACE. 



1 



Mr, Theodor HartweGj having been engaged by the 

 Horticultural Society of London as their collector, was 



Mexico 



1836 



transmit 



to the 



same 



time he was allowed, under certain restrictions, to furnish 

 on his own account sets of dried specimens for those who 

 should subscribe to them through the Society. The first 

 remittance of these specimens has now been received and 

 distributed, with numbers attached to each specimen ; and 

 it is the object of the following pages to make known the 

 corresponding names to the subscribers, and to be the 

 means of publishing such genera or species as appear to 



be new* 



The exact localities where the plants were gathered have 

 not yet been received, but from the general route pursued 

 by Mr. Hartweg, it appears that the greater portion of this 

 first parcel (Nos. 1 to 258 inclusive) were collected in 

 1837, to the north of the town of Mexico, on his way to 

 ilacatecas, chiefly about Guanaxuato, Lagos, Aguas Ga- 

 lleries, and Bolanos, with probably a few picked up during 

 his ^hort stay in the neighbourhood of Vera Cruz. 



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