194 Rhodora [SEPTEMBER 
longis. Fructus subglobosi, laxi, magnitudine mediocres. Plantae 
haud perfecundae. 
A glabrous, moderate-sized bush blackberry with dark green foliage, 
round stem armed with numerous short prickles, and broad close 
leaves, the middle leaflet frequently divided into three separate 
leaflets making them 7-foliolate. 
New canes. Stems 3 to 4 feet (9 to 12 dm.) high, glabrous, nearly 
terete, armed with numerous short strong prickles rs inch (2 mm.) 
long, about 15 to an inch of stem. Leaves large, broad, dark green, 
glabrous; leaflets broad, short-pointed, overlapping, lower pair 
sessile, side pair on short petiolules, middle leaflet on a petiolule 1 
inch (2.5 em.) long, very broad, cordate, often lobed or parted, fre- 
quently divided into three leaflets. 
Old canes. Inflorescence irregularly cymose or sometimes short- 
racemose on stout often leafy fruit-branches 3 to 6 inches (7 to 15 
em.) long. Fruit a somewhat globose loose berry of moderate size. 
Not very productive. 
In Newfoundland. Kane Valley five miles west of St. John’s in a 
brook meadow; Norris Arm along the railroad sparingly for a mile; 
Grand Falls near the paper mill. 
The dark green glabrous foliage of this blackberry and the high 
latitude in which it grows at once indicate that it is a form of R. 
canadensis L., and it is no more strongly armed than is frequent in 
the far north. It is a larger plant than is to be expected in such a 
latitude and such surroundings, and it differs greatly from all other 
forms of R. canadensis north or south in the form of its leaves, which 
resemble in shape and size those of R. recurvans Blanchard, having 
wide leaflets and short petiolules. The cordate middle leaflet is 
very noticeable and is more so when it is lobed or parted on one side 
or on both sides, but it is very striking when it is divided into three 
leaflets as it frequently is. 
The plant is normally 5-foliolate; probably one-fourth of the canes, 
possibly a much greater proportion have some 7-foliolate leaves. 
This variation in the middle leaflet occurs, though rarely, in some 
other species, and is generally considered to be a freak, but here it 
is so common that it may well be considered as a distinctive character. 
No constant characters can be discovered in the growth on the old 
canes, and this is the case generally in the extreme northern range 
of this species. A cymose form of inflorescence is most often seen, 
and all kinds of oddities occur, but the typical raceme is not found. 
I spent the last ten days of August, 1909, in botanizing in Newfound- 
land, crossing the island twice, a distance of 1100 miles, and explored 
