ADDITIONS AND CORRECTIONS. 



In the several years that have passed during the pubHcation of 

 the various parts of this volume, there have appeared descriptions 

 of a rather large number of new species of Mexican trees and shrubs. 

 Although it is not feasible to include these in the keys to species, it 

 has seemed desirable to enumerate them. It has been possible to 

 examine authentic material of a part of the new species, and in some 

 cases such examination has resulted in their being recognized at 

 once as synonymous with earlier published species. In the case of 

 species described in some of the larger or more critical genera the 

 writer has made no attempt to determine their validity, therefore it 

 is not to be assumed that all the additional species listed here are 

 considered valid by the writer. 



There are included also in this appendix additional vernacular 

 names gleaned from several sources. The greater part of them have 

 been obtained in connection with the identification of extensive 

 collections made in the States of Sinaloa and Nayarit by Sr. Jesus 

 G. Ortega. There have been accumulated a large number of ad- 

 ditional vernacular names as a result of recent explorations in 

 Central America, but it has not appeared necessary to list them here, 

 since they will be enumerated in a flora of Central America now in 

 course of preparation. 



Corrections of typographical errors have been made only in the 

 case of a few which are not obvious. In a work of such extent some 

 typographical errors -are bound to occur, but most of them will be 

 recognized at once as such. 



The number of species of Mexican trees and shrubs recognized as 

 valid in the present volume is approximately 5,700. There is no 

 doubt that this number will be greatly incr^eased by further ex- 

 ploration in Mexico. 



CYATHEACEAE. 



Page 41. Dr. Reko states that in Chinantla, Oaxaca, Cyathea princeps is 

 known as "rabo de chango," "rabo de mico," "rabo de mono," and "rabo de 

 machin." 



PINACEAE. 



Page 51. The Nahuatl term for pine tree is "oco-cuahuitl," which is said to 

 signify "torch tree." The following names are reported in literature for unde- 

 termined species of Pinus: "Tzivireni" (Michoacdn, Ramirez); "pizomlab" 

 (Huastec, Asiain); "tziin," "tzinkiup" (tree), "tzinuapk" (resin), "poptzin" 

 (Mixe, Belmar); "cueramu" (Tarascan, Leon); "ocotel" (Popocatepetl, Gadow). 



Page 54. Pinus pinceana. "Pino" (Sinaloa). 



Page 55. Pinus leiophylla. Known in Oaxaca as "pino gretado;" on Popo 

 catepetl as "tiacocote" (Gadow). 



(1043^ 



