MEXICAN AND CENTRAL AMERICAN UMBELLIFER^ II3 



bringing to light not only new forms of Umbelliferse, but of nu- 

 merous other groups as well. 



In 1897, Dr. J. N. Rose spent four months in Mexico, col- 

 lecting a series of 57 numbered specimens of Umbelliferge, 

 chiefly in the Sierra Madre of Durango, Zacatecas, Jalisco, and 

 Tepic, 21 of which have proved to be new. In 1899 also Dr. 

 Rose spent three months in Southern Mexico, collecting Um- 

 belliferae about Cuernavaca in Morelos, Pachuca in Hidalgo, 

 and Guanajuato. The Pachuca collections are of special in- 

 terest as they include certain little known species of Humboldt 

 and Thomas Coulter from the type localities. 



