254 LUTHER BURBANK 



Among the hybrids a few of the most beautiful 

 forms were selected and placed, without specific 

 names, with a florist for introduction. Some of 

 my earlier clematis introductions had been given 

 names more or less suggestive of their peculiari- 

 ties of flower, including "Ostrich Plume" and 

 "Snow Drift." Another "Waverley," etc. 



I have stated that the earlier varieties were 

 subject to the clematis disease. In the later ex- 

 periments the endeavor was made to produce 

 varieties that would be immune to disease, as well 

 as those that would show exceptional hardiness. 



Several years ago, while on a trip in northern 

 Canada, I found patches of clematis on half- 

 woody slopes, growing in a region where the 

 thermometer sometimes goes fifty or even sixty 

 degrees below zero in the winter — regions where 

 the deep wells do not thaw out altogether during 

 the entire summer, always having a thick coat of 

 ice about their walls. 



The hardy clematis found in this region bears 

 dark blue flowers that are fully three and a half 

 inches in diameter, being about as large as those 

 of the cultivated varieties known as the blue Jach- 

 manni, the blossoms of which also resemble it in 

 color. There are two or three wild species in 

 the same region, namely C. Fremonti and C. 

 ligusticifolia, plants that bear rather inconspicu- 



