8 Rhodora [JANUARY 
and the surrounding towns. Equally typical plants are abundant 
in Manton, Graystone and Graniteville near Providence, Rhode 
Island. Fairly representative plants were also seen in Canton, 
Lexington and Palmer, Massachusetts. 
This plant can be placed with the Recurvans class, and in appearance 
it is intermediate between R. recurvans and R. procumbens. It differs 
from R. recurvans in having thicker and dark green leaves, green 
stems, a more prostrate habit, and the rosette-shaped collection of 
unifoliate leaves subtending the pedicels is very noticeable. 
Mr. W. B. Rossberg, whose name is associated with this species, 
is a well-known local botanist of New Britain, Connecticut, who is 
also an enthusiastic student of local geology. 
R. sETosus Bigelow. (R. nigricans, Rydberg). Frequent in 
' moist situations, borders of swamps, ponds and streams and some- 
times in dry ground. Described fully in Ruopora, Nov., 1906. 
Rubus semisetosus, n. sp. Plants decumbent or erect, stems mostly 
round, hard, glandless, with numerous slender, often reflexed bristle- 
prickles; leaves on new canes 5-foliate, narrow-ovate, approaching 
obovate, rather long-pointed; fruit poor; flowers appearing late. 
New canes. Stems decumbent or erect, 1 to 3 feet long generally 
terete, reddish, hard, glabrous and glandless, rarely branched. Prick- 
les numerous, 20 to 30 to the inch of stem, the slender or bristle-shaped 
prickles often j^; in. long, perpendicular to the stem or more often very 
retrorse. Leaves of moderate size, 34 to 5 in. wide, 5-foliate, not thick 
but firm in texture, dull green and nearly glabrous on the upper sur- 
face, paler and more or less pubescent below. Leaflets oval or often 
appearing obovate, rather long taper-pointed, outline entire, serrate 
and serrate-dentate, more or less doubly; the middle one about twice 
as long as wide, often rounded at the base, the others much narrower 
and cuneate. Petiole and petiolules grooved, nearly glabrous; slender 
bristle-prickles weak and retrorse; petiole long; the petiolule of the 
middle leaflet } in. long, those of the side leaflets one-third as long 
and the basal leaflets sessile. 
Old canes. Stems mostly decumbent, often prostrate, much killed 
back, prickles greatly impaired. New growth consisting entirely 
of leafy fruit-branches 4 to 6 in. long tipped with inflorescence, one 
from each old leaf-axil. Axis zigzag, somewhat pubescent, bristles 
few. Leaves 3-foliate or rarely a few 5-foliate, few unifoliate, leaflets 
narrow; in color, texture and pubescence much like those on new 
pe 
