flowers of some are violet, of others light blue, and finally 

 of the variety before us white. 



Unfortunately our artist has paid no attention to the 

 character of the involucrum, which is, therefore, in the 

 accompanying figure extremely inaccurately represented. 

 In reality it consists of a few very narrow, rather leafy, 

 spreading scales, which seem as if they all originated from 

 the same circle, and have a somewhat squarrose appear- 

 ance : otherwise the figure is faithful enough. 



