78 THE SMALL FRUITS OF NEW YORK 



unarmed; flowers rather small for the group; cal>Tc pubescent or hirsute, lobes ovate- 

 lanceolate, shortly cuspidate; petals longer, roundish. Fruit subglobose, drupelets few, 

 rather large. 



Northeastern United States; Vermont. There are no cultivated 

 varieties. 



Another species probably of the Argutus group has been segregated as 

 R. crux. Ashe Jour. Elisha Mitchell Sci. Soc. 19:8. 1903. 



Rubus louisianus. Berger n. sp. 



Swampberry. — Canes erect, 1-2 m high, sharply angled and deeply furrowed, downy 

 when 3'oung, glabrous later on, green or greenish brown, along the angles with scattered, 

 middle sized or large straight or hooked prickles. Petioles rather stout, like the petiolules 

 pubescent or villous and with scattered, hooked prickles which extend to the midveins; 

 stipules subulate, ciliate; leaflets 5, narrowly lanceolate or oblanceolate, rather long pointed 

 and somewhat narrower toward the base, bright dull green above, paler and pubescent under- 

 neath, rather regularly and sharply simply or doubly serrate; the terminal leaflet larger, 

 longer pointed and longer stalked, roimdish or even subcordate at the base, middle ones 

 shortly stalked and lower ones sessile, all more or less acute at the base. Fruiting racemes 

 pubescent, with 7-8 or more erect pedicels, pubescent and with a few hooked prickles; 

 leaves 3-foliolate, leaflets cuneate at the base, the upper ones simple ovate-deltoid, shortly 

 stalked. Calyx pubescent, lobes ovate-deltoid, tomentose inside. Fruit cylindrical with 

 numerous small drupelets, whitish, sweet. 



Southeastern United States; South Carolina and Louisiana, on damp 

 roadsides, in ravines, known as Swampberry. 



To this species belongs the variety Crystal White. Burbank's variety 

 Iceberg is possibly the same renamed. It is too tender for the North, 

 usually freezing back. 



Series 11. Frondosi. Bailey Gent. Herb. 1:188. 1923. 



Robust brambles, canes erect, arching above or recur\-ing, angular when young, more 

 or less terete when old, glabrous, armed with scattered rather stout prickles. Leaves 

 S-foliolate, velvety pubescent beneath, leaflets mostly broad, roundish or roundish ovate, 

 the terminal leaflet cordate; those on the flowering branches variable. Inflorescence leafy, 

 pubescent, slightly prickly, usually without glands. 



A. Inflorescence not glandular or glands not very conspicuous 



B. Leaflets on turions, especially the terminal ones, roundish ovate, evenly toothed or 

 serrate 



C. Bract leaves broad, obtuse R. frondosns 



CC. Bract leaves pointed at both ends R. reciirvaiis 



BB. Leaflets on turions narrower, the terminal ones ovate, long pointed, in the upper 

 half lobately doubly toothed or serrate 



C. Bract leaves very variable, narrow and acute or acuminate R. ariindelamis 



CC. Bract leaves ovate to lanceolate, obtuse or pointed R. amnicola 



AA. Inflorescence glandular 



