ROSE FAMILY 



LEAFY-BRACTED BLACKBERRY. LEAFY-CLUSTER 



BLACKBERRY 



Rhbus argutus. Rubiis frondbsiis. 



"A plant of comparatively stiff and straight growth, usually 

 shorter than R. nigrobaccus, with narrower and more rigid leaf- 

 lets. Stems stout, angled, with rather stout straight prickles, 

 and the whole plant glabrous or only slightly villous, except in 

 some of the very young parts. The flower clusters are short 

 and leafy ; flowers about the size of those of R. nigrobaccus. Its 

 range is wide, extending from New Brunswick and Lake Superior 

 to Florida, Mississippi and Kansas. It is less common in the 

 north than R. nigrobaccus but is more abundant in the south, 



and there is a southern variety." 



L. H. BAILEY. 



THORNLESS BLACKBERRY. MILLSPAUGH'S 

 BLACKBERRY 



Ritbus canadensis. Rubus millspaughii. 



" This plant has the general habit of R. nigrobaccus, but is dis- 

 tinguished by its long and slender petioles, mostly narrow and 

 long acuminate leaves, long stipules, and especially by its lack 

 of pubescence and general absence of thorns. It is apparently 

 a well-marked species, growing throughout the country in the 

 higher elevations froir the Carolinas northward to Lake Supe- 

 rior." 



L. H. BAILEY. 



The following account of this Blackberry is quoted 

 by Professor Bailey in " The Evolution of our Native 

 Fruits " from notes made by Mr. Kofoid, of North Caro- 

 lina. " It seems to be very abundant where it occurs, 

 forming- dense thickets of upright stems five to eight 



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