THE SMALL FRUITS OF NEW YORK 47 



Western North America; eastern and central Washington. 



Series 8. Idaei. 



Canes more or less erect or nodding. There are 9 species known, 



natives of northern Asia, one extending to Europe and North America. 



A. Canes green, densely tomentose and prickly; stipules deeply lacerate. . . .R. mesogaeus 

 AA. Canes more or less brown, prickly or bristly; stipules entire, subulate R. idaens 



Rubus mesogaeus. Focke in Engler Bot. Jahrb. 29:399. 1901; Focke Spec. Rub. 

 2:204. 1911; Bailey 5<a»(i. Cyc. Hort. 5:3028. 1916. 



Robust s b, canes erect, stout, green, densely tomentose and prickly, prickles 

 straight or curved upwards, pubescent. Leaves 3-foliolate, petioles and petiolules tomen- 

 tose and prickly like the stems; stipules lanceolate, deeply lacerate with subulate segments; 

 leaflets sessile, obliquely ovate, acuminate, cordate at the base, terminal one broader and 

 larger, cordate, lobately incised, finely doubly serrate, dark green and pubescent above 

 and densely velvety pubescent underneath. Inflorescence a dense erect terminal cluster 

 augmented by some lower erect a.xillar clusters; flowers small, short pedicelled, pubescent, 

 petals small, white. Fruit small, globular. 



Central China; rather insignificant as flowers and fruit are concerned, 

 but the foliage is very ornamental. Quite hardy at Geneva. 



Rubus idaeus. Linnaeus Sp. PI. 492. 1753; Focke Spec. Rub. 2:207. iQn; 

 Gray New Man. 7th Ed. 486. 191 1; Femald Rhodora 21:89. iQiQI Bailey Gent. Herb. 

 1:148. 1923. 



Red Raspberry. — Canes erect, slightly arching at the top, terete, more or less bristly 

 or prickly, glabrous or downy, green or brownish, glaucous. Leaves usually pinnately 

 S-foliolate, leaflets more or less ovate, pointed and doubly serrate, lateral ones sessile, green 

 above and usually more or less densely white tomentose underneath. Inflorescence ter- 

 minal and axillary, racemose, pedicels slightly nodding; caly.x-lobes ovate-deltoid to 

 lanceolate-deltoid, cuspidate; petals oblong, white, about as long as the stamens. Fruit 

 pendulous red or rarely amber colored, drupelets numerous, soft, sweet, tomentose. 



Northern Hemisphere; in woods, on sunny and shady, dry and moist 

 places, on poor as well as on good soil, common through northern Europe, 

 Asia, and America. A very variable plant, with several distinct geographi- 

 cal varieties, often considered as different species or subspecies, but usually 

 connected by numerous intermediate forms, and not always readily 

 identified. 



The following is a key to these varieties : 

 A. Inflorescence pubescent or felty with adpressed grayish or whitish hairs, more or less 

 prickly, but without glands 

 B. Canes not bristly to the top 



C. Inflorescence elongately racemose i. R- idaeus vulgatus 



D. Leaflets of flowering shoots 3-foliolate 

 E. Leaflets white underneath, narrow lanceolate or ovate-lanceolate, st'-ongly 

 toothed la. R. idaeus vulgatus forma angustif alius 



