MONOGRAPH OF THE NORTH AMERICAN 

 UMBELLIFERAE. 



C(niher Sc Rose. 



T write a review of it and prepared it, but the 

 ined in his hands unpublished from press of 

 I now. It seemed desirable after six years to 



of the paper remains as at first prepared. The 

 ertain genera is remanded to 



The first monograph of this family prepared by these au- 

 thors nearly twenty years ago, was the work of Mr. Rose, 



little "field experience with the plants treated. 'The defects 

 in this excellent paper were such as would be expected under 



of keys, lack of knowledge of types, and absence of knowledge 

 of ecology and the resultant undue emphasis of trivial char^ 

 acters in certain cases. But the conception of species and gen- 

 era was for the most part that of Gray and corresponded with 

 the limitations as they occur in nature with the exceptions 

 noted. An illustration of the inaccuracy of the keys is found 

 u\ .Angelica genuflexa, which cannot be found either 

 in the originalor the recent monograph in any other 

 ireniis hut Conioselinum. There has been no improvement in 

 the last monograph in this respect for the species of the new 

 genera cannot be found in many cases in the proper genera 

 stich as the segregates from Cymopterus and Peucedanum, 

 Tseudocymopterus. etc. There is much looseness in both the 

 generic and specific descriptions. In the matter of ecologv 

 there is little improvement showing but little field study, but 

 in the matter of study of types there has been great improve- 

 ment, and also it shows a wealth of study of herbarium ma- 

 terial which IS very good in its way but never can take the 

 place of study of the plants as they grow. Many problems 

 of the heri)armm become nothing in the light of 'field work, 

 ft IS a fad with some collectors to gather the most aberrant ma- 

 terial and send that m with the liope that the individual mav 

 get h:s named immortalized (execrated) by the publication of 



