VOL. II.] 



ROSE FAMILY 



199 



leaves 3-7-foliolate. 



Fruit falling away from the dry receptacle. RASPBERRIES. 



Herbaceous, unarmed, 2' -6' high, i-2-flowered. 4. R. arcticus. 



Shrubby, erect, decumbent or ascending, many-flowered. 



Stems bristly, not glaucous; fruit light red. 5. R. strigosus. 



Stems prickly, slightly glaucous; fruit dark red. 6. R. neglectus. 



Stems prickly, very glaucous; fruit purple-black. 7. R. occidentalism 



Fruit persistent on the fleshy receptacle. BLACKBERRIES. 



Herbaceous, annual, unarmed; fruit red-purple. 8. R. Americanus. 



Shrubby, erect, recurved or ascending; fruit black. 



Leaves pubescent or glandular-pubescent beneath; plants prickly. 

 Fruit broadly oval, very pulpy. 9. R. 



Fruit narrowly oblong or thimble-jhaped, comparatively dry. 10. R. 



villosus. 



A lleghaniensis. 



Millspaughii. 



cuneifolius. 



hispidus. 

 setosus. 



Leaves glabrous both sides; plant unarmed. II. R. 



Leaves white-woolly beneath; plant prickly. 12. R. 



Shrubby, trailing or procumbent. 



Stem bristly, scarcely prickly; leaflets obovate, K'-i^' long. 13. R. 

 Stem densely bristly; leaflets acute or acuminate, 2' -4' long. 14. R. 

 Stem prickly; leaflets ovate or oval. 



Leaflets thick, coriaceous, persistent. 15. R. trivialis. 



Leaflets thin, deciduous. 



Leaflets pubescent beneath, mostly rounded or cordate at base. 



1 6. R. Bailey anus, 

 Leaflets nearly or quite glabrous, mostly narrowed at base. 



17. R. Canadensis. 



i. Rubus odoratus L,. Purple -flowering 

 Raspberry. (Fig. 1890.) 



Rubus odoratus L. Sp. PI. 494. 1753. 



Erect, branched, shrubby, glandular-pubescent 

 and somewhat bristly, not prickly, 3-5 high. 

 Stipules small, lanceolate, acuminate; leaves sim- 

 ple, petioled, large (sometimes nearly i broad), 

 3-5-lobed, cordate at the base, pubescent, espe- 

 cially on the veins of the lower surfaces, the lobes 

 acuminate, finely serrate, the middle one longer 

 than the others; flowers terminal, rather numer- 

 ous, corymbose or paniculate, purple, showy, i'- 

 2' broad; bracts membranous; calyx-lobes tipped 

 with a long slender appendage; fruit red when 

 ripe, depressed-hemispheric, scarcely edible. 



In rocky woods, Nova Scotia to Ontario and Michi- 

 gan, south to Georgia and Tennessee. A form with 

 white flowers has been found at Pine Hill, Ulster Co., 

 N. Y. June-Aug. In England called Virginia 

 Raspberry. 



2. Rubus parviflorus Nutt. Salmon- 

 berry. White-flowering Raspberry. 

 (Fig. 1891.) 



Rubus parviflorus Nutt. Gen. i: 308. 1818. 

 Rubus Nutkanus Mocino; DC. Prodr. 2: 566. 



1825. 



Similar to the preceding species but usually less 

 glandular and scarcely bristly. Leaves petioled, 

 simple, cordate at the base, 3-5-lobed, the lobes 

 acute or obtusish, rarely acuminate, the middle one 

 equalling or but slightly longer than the others, all 

 coarsely and unequally serrate; flowers few, corym- 

 bose, white, terminal, i / -2 / broad; calyx-lobes 

 tipped with a long, slender appendage; fruit de- 

 pressed-hemispheric, scarcely edible, red when 

 ripe. 



In woods, Michigan, Minnesota and western Ontario 

 to Alaska and California, south in the Rocky Mountains 

 to Utah and Colorado. May-July. 



