86 LINN&US AS AN EVOLUTIONIST 



is the true artichoke, and has been cultivated 

 from no one knows how far anterior to all 

 written records. Under this old type species, 

 Cynara scolymus, Linna3us admits three 

 marked varieties. Then he proceeds to name 

 and define a second species, a very distinct 

 one, but with a well-authenticated history 

 as having arisen and come into existence as 

 a seedling of the other species. He inti- 

 mates that he would have liked to be able to 

 consider it a hybrid, 1 but as its parentage as 

 a hybrid could apparently lie nowhere but 

 between two of the three varieties of the other 

 species, the fact would remain that it was a 

 species derived not from two parent species 

 but from one alone. It was another of those 

 abruptly derivative species in which Linna3us 

 was disposed to believe despite those hard 

 half-theologic definitions of his Philosophia 

 Botanica. 



In the progress of these inquiries into the 

 mind of Linnseus as to the origin of species 

 nothing that I have come upon has more 

 deeply interested me than his remark upon 

 the two species of sundew common in northern 

 Europe, Drosera rotundifolia and D. longi- 



1 Species Plantarum, 2 ed., p. 1159. 



