322 THE EVOLUTION OF OUR NATIVE FRUITS 



until 1895 (in Bulletin 99 of the Cornell Experiment 

 Station). One is soon able to recognize them by 

 their low, or diffuse, or even half -trailing habit, the 

 broad, jagged and short -stalked leaflets, the loose, 



Fig. 69. Showing how the Rathbun propagates by means of tips. 



indefinite or scattered inflorescence, and the short, 

 irregular fruits. One occasionally finds them rooting 

 at the tips, like a dewberry (Fig. 69), and sending 

 up strong blackberry -like shoots. It is singular that 

 promising natural hybrid tribes should occur in 

 various genera, as the native plums, apples, rasp- 

 berries and blackberries. (See page 381.) 



The thornless blackberry has lately come into 

 prominence among botanists. (See Figs. 92, 93.) It 

 was thus described by the writer some years ago :* 



"A peculiar bush blackberry, with long .wand -like 

 canes, and entirely destitute of thorns, was collected 

 a year or more ago by Dr. C. F. Millspaugh in West 



*Agric. Sci. vi. 66 (1892). 



