224 Rhodora [November 



can find it on his or her own botanizing ground, for I have found it 

 abundant or common in five of the New England states which I have 

 visited. From the common high blackberry {Rubus tiigro/>accus, 

 Bailey) it is readily distinguished by the entire absence of glandular 

 pubescence. It belongs to a group of forms hitherto generally 

 referred to R. argutus, Link, and R. Randit, Bailey. The type of 

 the former of these species is still preserved in the Royal Botanical 

 Museum at Berlin, and I have been able to examine an excellent 

 tracing of it. now in the Gray Herbarium. It has decidedly narrower 

 leartets which are cuneate or obtusely pointed at the base but not in 

 the least cordate. In R. Rnndii, likewise, the leaflets are narrower 

 than in the plant here described and not at all cordate. R. Randii 

 is furthermore a much weaker plant scarcely or not at all armed, and 

 has a small flower and a small, dry, and seedy fruit. The type speci- 

 men is now in the Gray Herbarium. 



The new species is readily distinguishable by its broad, thin pubes- 

 cent leaves, by its nearly round stem from two to four feet high, the 

 canes very often bending over as in the Black Raspberry, and by a 

 noticeable resemblance to the common running blackberry, vV. tHIosus, 

 Ait. It may be named and characterized as follows : — 



R. recurvans, n. sp. Plant softly and copiously pubescent but 

 wholly destitute of glandular hairs of any kind. 



New caiies. Stem glabrous, reddish on the upper side, nearly 

 cylindrical or with five rounded or rarely furrowed faces. Prickles 

 set in lines over the angles of the pentagonal pith, straight with a 

 slight backward slant, rather strong, one eighth inch long above the 

 enlarged basal part, about five to an inch of stem but varying con- 

 siderably in number and strength. Leaves large (sometimes ten 

 inches broad), all 3-foliolate or the upper often 5-foliolate. Leaflets 

 nearly smooth above with thick straight pubescence beneath, yellow- 

 ish green, coarsely and doubly serrate-dentate, generally thin ; the 

 middle one broadly ovate taper-pointed, about three-fourths as wide 

 as long cordate or subcordate, its stalk an inch in length ; side 

 leaflets oval, cuneate at each end and nearly twice as long as wide, 

 their stalks one fourth inch long; basal leaflets oval, twice as long 

 as wide, wedge-shaped at each end, sessile. Petioles furrowed and 

 glabrous, the petiolules pubescent, both armed with hooked prickles. 



Old canes. More or less densely pubescent on all parts, except the 

 upper surface of the leaves ; some parts nearly woolly. Leaves more 

 deeply and sharply serrate-dentate than those of the new canes and 

 of a lighter yellowish green. Stem nearly round with prickles intact, 

 the main axis dying back to a considerable extent during the win- 

 ter. Secondary growth polymorphous and difficult to describe, — 



