1900] Brainerd, — The blackberries of New England 25 
cence is confined to the dewberry, and may serve to distinguish it from 
the bush blackberry ; but a little observation will show that blackber- 
ries and dewberries are alike in this respect. It may be further noted 
that occasionally the raceme is slightly compound, the lower pedicels 
developing into two- to several-flowered peduncles. This is common 
in A, hispidus and in R. nigrobaccus. 
Of the principal forms of blackberries recognized by Professor 
Bailey in his revision, I find that thirteen occur in New England. 
Their distinctive marks will be given in the synopsis at the close of this 
article. But certain preliminary observations regarding range, habitat 
or synonomy may be of interest to students of the genus. 
RUBUS NIGROBACCUS is the name happily coined by Professor Bai- 
ley for the common species of “ highbush blackberry." The name by 
which it has been heretofore known, A. villosus, was originally given 
by the English botanist, Aiton, to our common dewberry, and is right- 
fully restored to that species. A. zigro?accus is the plant that springs 
up so abundantly in wayside thickets and in clearings, before the 
stumps are sufficiently rotted for ploughing. It is, however, uncommon 
at elevations of over a thousand feet, at least in the mountains of Ver- 
mont. During a three days’ ramble last August over the town of 
Woodbury (alt. c. 1500 ft.), not a single plant was noticed, though 
several other species of Rubus were abundant. Occasionally plants 
occur that produce white or amber-colored berries; this Professor 
Bailey has marked off as var. a/inus. But it appears to be rather an 
abnormal state than a proper botanical variety. At least five stations 
are reported for Vermont. ‘Two New Hampshire stations are reported 
in RHODORA I, p. 205. 
RUBUS ALLEGHENIENSIS, Porter, was first described from the moun- 
tains of Pennsylvania, and is reported to be abundant in the Adiron- 
dackf It is said in The Illustrated Flora to be “the characteristic 
High Blackberry of the mountains of the Eastern and Middle States.” 
A specimen with immature fruit, collected by Dr. B. L. Robinson, at 
Jaffrey, N. H., July 7, 1897, has all the characters of the species that 
would appear at that stage of growth. I have distinct recollections of 
finding in past years certain bushes that bore long, slim, fine-grained, 
dryish fruit, markedly different from the oval, luscious fruit on neigh- 
boring plants. It is hoped that collectors in New England will be on 
the outlook for this species another season. Professor Bailey remarks 
that “in its typical form it is very well marked, and seems to be worthy 
