VARIOUS DEWBERRIES 



377 



Fig. 88. Rubua trivialis. 

 One-third size. 



short, straight, prickly peduncles. In cultivation, this species 

 has given the Manatee, Wilson White and Bauer. 



In the southwest, from Missouri to Texas, there is a curious 

 form of dewberry which I have at various times intended to make 

 the type of a new species, but which 

 may be a series of hybrid forms be- 

 tween B. trivialis and R. argutus. It 

 has much the range of variation of the 

 well-known hybrid of the northern dew- 

 berry and blackberry, and until I have 

 opportunity to study the plants in the 

 field, I should prefer to call it a hybrid. 

 It is sometimes trailing, and some- 

 times sub-erect. It is variously pubes- 

 cent, is usually armed, and sometimes 

 hispid ; the flowers are sometimes two 

 or three, and sometimes in elongated 

 clusters ; the leaves are very variable, 



ranging from the narrow forms of some strains of R. trivialis 

 almost to the broader forms of R. argutus. 



BB. Fruit red and small, scarcely eatable. 



5. RUBUS HISPIDUS Linn. Sp. PI. 493 (1753) (Fig. 73). 



Stems scarcely woody, but lasting over winter, perfectly 

 prostrate, and beset with small, reflexed, weak bristles, sending 

 up many short and leafy flowering shoots ; leaflets mostly three, 

 obovate, blunt and shining, firm and thick in texture, and 

 tending to be evergreen ; flowers small and few on leafless pe- 

 duncles ; fruit of few grains, red or purple and sour. Sandy 

 places and low woods in the northern states, and southward to 

 the mountains of South Carolina. Linnaeus' specimen is well 

 preserved in his herbarium in London, and is properly under- 

 stood by American botanists. 



AA. BLACKBERRIES : characterized by erect or strict growth (No. 6 

 often an exception], and the plants propagating from 

 suckers. 

 B. Plant weak, hispid rather than thorny, the fruit reddish. 



6. RUBUS SETOSUS Bigelow, PI. Bost. ed. 2, 198 (1824) (Figs. 



80, 81). 

 An ascending or almost erect low-growing plant, the older 



