THE SMALL FRUITS OF NEW YORK 63 



East central North America; Michigan, Indiana. 



R. arizonensis. Focke Spec. i?M6. 3:307. 1914. 



R. oligospermus. Thomber ex Rydberg N. Am. Fl. 22:470. 1913; not Sudre igog. 



Very similar to R. flagellaris; but floral branches only 5-10 cm long, with 3- to s-folio- 

 late leaves, 1-4 cm long, pubescent. Flowers 1-5, pedicels villous and with recurved prickles ; 

 sepals villous tomentose, petals 8-9 mm long. Fruits globose, 10-12 mm across with 

 about 12-25 drupelets. 



Arizona and south to Mexico; first collected by C. G. Pringle in the 

 St. Catalina Mountains, Arizona, in 1881. 



R. enslenii. Tratt. Ros. Monogr. 3:63. 1823. 



This is often cited in connection with R. flagellaris, but it is yet insuf- 

 ficiently known. The original specimen in the Vienna herbarium is a weak 

 plantlet; its exact habitat is not known. Possibly plants grown near Biloxi, 

 Mississippi, may represent this species. 



Rubus arenicola. Blanchard i^/ioJora 8:151. 1906; Bailey Ceu^. i/eW). 1:167. 1023. 



Canes perfectly prostrate, obscurely angular or terete, glabrous, with numerous, slender, 

 recur\-ed prickles. Leaves 3-foliolate, the lower ones o'^ten 5-foliolate, rather regularly 

 and sharply and often doubly toothed, dark green above and paler beneath, almost glabrous 

 on both sides, except for the veins beneath ; lower leaflets sessile, small, middle ones short 

 stalked, obliquely broadly ovate, shortly pointed, terminal leaflet larger and longer stalked, 

 roundish or cordate at the base; on 3-foliolate leaves the lower leaflets oblique or obscurely 

 lobed on the outer side, and the terminal one mostly broadly obovate, suddenly contracted 

 into a short point. Petioles and petiolules slightly pubescent and prickly; stipules narrowly 

 lanceolate, acute. Flowering branches pubescent, sparingly prickly; leaves 3-foliolate, 

 leaflets obovate, obtuse or shortly pointed, doubly toothed. Flowers 5-10 or more, cor\-m- 

 bifomi; pedicels pubescent, sparingly prickly; calyx pubescent, lobes ovate, cuspidate; 

 petals longer, obovate; stamens and pistils numerous. Berries roundish oblong. 



Eastern North America; Nova Scotia to Massachusetts. There are 

 no cultivated forms of this species as yet. 



Rubus plicatifolius. Blanchard Rhodora 8:149. 1906; Bailey Gent. Herb. 1:167. 



1923- 



R.villosus. Alton Hort. Ken: 2:210. 1789; not Thunberg 1784. 



Canes procumbent, terete, glabrous, with scattered, slender, recurved prickles. Leaves 

 5-foliolate, bright green and glabrescent on both sides, except for the veins beneath, sharply 

 and doubly serrately toothed; lower leaflets sessile, obovate, contracted into a more or 

 less long point, terminal one stalked, longer and broader and more ovate, rounded or sub- 

 cordate at the base; petioles long, glabrescent like the petiolules and the midveins, with 

 scattered, recurved prickles; stipules long, lanceolate-linear, acute. Flowering branches 

 slender, pubescent, sparingly prickly; leaves 3-foliolate, finely doubly toothed, paler and 

 pubescent underneath, with close, fine, prominent veins and the blade usually finely depressed 

 or falted between them. Flowers corymbiform, 5-7 or more or less, rather small; pedicels 



