200 



ROSACEAE. 



[VOL. IL 



3. Rubus Chamaemorus I,. Cloudberry. Knot- 



berry. Mountain Bramble. Mountain 



Raspberry. (Fig. 1892.) 



Rubus Chamaemorus L,. Sp. PI. 494. 1753- 



Herbaceous, rootstock creeping, branches erect, 3 / -io A 

 high, fiuely pubescent or nearly glabrous, scaly below; 

 stipules ovate, obtuse; leaves petiolcd, simple, orbicular or 

 broader, s-g-lobed, cordate or reniform at the base, pubes- 

 cent or glabrous, 1'-$' broad, the lobes usually short, broad, 

 dentate; flowers dioecious, solitary, terminal, white, 6 // -i2 // 

 broad; sepals ovate, shorter than the petals, sometimes 

 toothed toward the apex; fruit red, composed of few drupe- 

 lets, edible and pleasant. 



In peat-bogs and swamps, Maine and New Hampshire to arctic 

 America, extending to Alaska and British Columbia. Also in 

 northern Europe and Asia. June-July. 



4. Rubus arcticus L. Arctic Raspberry or 



Bramble. (Fig. 1893.) 

 Rubus arcticus L. Sp. PI. 494. 1753. 



Stems erect, simple or branched from the base, herbaceous, 

 S'-io* high, unarmed, finely pubescent, sometimes leafless be- 

 low. Stipules oval or ovate, obtuse, l"-\" long; leaves slen- 

 der-petioled, 3- foliolate (rarely 5-foliolate); leaflets sessile or 

 short-stalked, rhombic-ovate or obovate, coarsely and un- 

 equally serrate or slightly lobed, 9 // -i8 // long; flowers soli- 

 tary, or occasionally 2, terminal, slender-peduncled, pink,6"- 

 12" broad, sometimes dioecious; sepals acute, equalling or 

 shorter than the obovate entire or emarginate petals; fruit 

 light red, of several or numerous drupelets, edible, fragrant. 



In peat-bogs and damp woods, Quebec to Manitoba and British 

 Columbia, and throughout arctic America. Also in northern 

 Europe and Asia. Called also Strawberry-leaved Bramble. 

 Summer. 



5. Rubus strigdsus Michx. Wild Red Raspberry. (Fig. 1894.) 



Rubus strigosus Michx. Fl. Bor. Am. x: 297. 1803. 

 Rubus fdafus var. slrigosus Maxim. Bull. Acad. St. 

 ivtersb. 17: 161. 1872. 



Stems shrubby, biennial, branched, 3-6 

 usually densely clothed with weak glandular bris- 

 tles, or the older stems with small hooked prickles. 

 Stipules narrow, deciduous; leaves petioled, pin- 

 natcly 3-5 foliolate; leaflets ovate or ovate-oblong, 

 acuminate.sharply and irregularly serrate or slightly 

 lobed, rounded at the base, \'-$' long, whitish-pu- 

 bescent beneath; inflorescence terminal and axil- 

 lary, racemose or paniculate, loose; pedicels slender, 

 curving in fruit; flowers 4 // -6 // broad ; pctalswhite, 

 ascending, about equalling the spreading acumi- 

 nate sepals; fruit elongated-hemispheric, light 

 red, white in a cultivated form. 



In dry or rocky situations, Newfoundland and Lab- 

 rador to Manitoba and British Columbia, south in the 

 Alleghanies to North Carolina, and in the Rocky 

 Mountains to New Mexico. Ascends to 5500 ft. in 

 North Carolina. The original of the Cuthbert and Han- 

 sail Raspberries. May-July. Fruit ripe July-Sept. 



