348 kellerman: phototypes 



certainty and sometimes photographs of it taken before the type 

 specimen was collected may be in existence. Such anticipatory 

 phototypes may be of great interest. 



The highest value from a botanical standpoint must be given 

 to synchronous phototypes taken of the fresh type specimens 

 before they have been dried or placed in preserving fluid. If 

 another photograph be taken at the same time showing the exact 

 position on the type plant of the particular branch selected as the 

 type specimen, the photographic record attains an even greater 

 degree of perfection. 



The more usual case, however, is that of the photograph taken 

 from the dried type specimen as it exists in the herbarium. Such 

 a subsequent phototype tho giving less information as to the 

 nature of the species it represents than does a synchronous pho- 

 totype taken in the field, has nevertheless one important advan- 

 tage in that it shows the original label, thereby preventing any 

 possible error or confusion. 



