THE BRAMBLES 185 



flavored than blackberries, while the plants are usually more 

 productive. When hardier varieties have been selected, which 

 at the same time are less capricious to soils and less dependent 

 on cross-pollination between varieties, the place of dewberries in 

 home and commercial plantations will be established. At 

 present, several species and a rapidly increasing number of 

 varieties are under cultivation. 



272. Species of dewberries. — Of the many species of black- 

 berries and dewberries from which cultivated varieties are cer- 

 tainly derived, pomologists distinguish four as dewberries. 



1. Euhus flagellaris, Willd. (Plate XXI) This species is characterized 

 by woody canes several feet long, becoming prostrate, usually stoutly 

 armed with recurved prickles; leaflets usually narrowed at the base, nearly 

 or quite glabrous, membranaceous; flowers in leafy racemes; fruit sub- 

 globose to short-cylindric with few to many large juicy drupelets. 



This is the dewberry of dry open fields from Maine westward 

 and southward. Var. roribaccus, Bailey, is a well-marked sub- 

 species from West Virginia, of which the plant is stronger, the 

 flowers larger, with more elongated pedicels and with larger 

 fruits. There are several cultivated varieties of the sub-species, 

 of which the old and well-known Lucretia is the best representa- 

 tive. B. flagellaris is the most important type of dewberry in 

 cultivation. It has been known as E. villosus and R. proctim- 

 hens. 



2. Bubus invisus, Brit. This species is similar to the last and seems 

 to have about the same range. The canes are stouter, less procumbent, 

 often making mounds or piles of canes and herbage, not so well armed; 

 leaves more coarsely toothed; pedicels longer, and with large and leaf -like 

 sepals. Several cultivated dewberries are derived from this species of which 

 Bartel is best known and most representative. 



3. Bubus trivialis, Michx. Southern Dewberry. This species is quite 

 distinct from 1 and 2 and so variable as to be most perplexing to sys- 

 tematists. The canes are very long, usually wholly trailing, slender, armed, 

 as are also the petioles and often the peduncles, with flattish, short, hooked 

 prickles; leaflets leathery, of three kinds, those on fruiting shoots rather 

 small and nearly or quite evergreen; peduncles 1-3-flowered; fruit cylin- 

 drical with many drupelets which are sometimes dry and seedy but usually 

 juicy and excellent. 



The habitat of E. trivialis is from Virginia to Florida and 

 Texas near the coast. Of the few varieties of this species under 



