BICKNELL: HAVE WE ENOUGH NEW ENGLAND BLACKBERRIES? 401 
X PROCUMBENS: Nantucket; Long Island. 
x BartLeyAnus: Long Island. 
x ENsLent: Long Island. 
X FLAGELLARIS: Nantucket. 
> CUNEIFOLIUsS: A plant collected at Tom’s River, New 
Jersey, July 1, 1900, has every appearances of being this 
cross. 
Rubus amnicolus, here placed with R. argutus, represents one 
of those intermediate variants between R. allegheniensis and R. 
argutus which, with equal reason, might be regarded as a form of 
either species. When copiously glandular their relationship to R. 
allegheniensis would scarcely be doubted; when glandless or nearly 
so they are not to be separated from racemose forms of R. argutus. 
RUBUS FRONDOSUs Bigel. 
. recurvans Bld. 
. recurvans, var. subrecurvans Bld. 
. arundelanus Bld. 
. Rossbergianus Bld. 
. philadelphicus Bld. 
> ALLEGHENIENSIS: Nantucket; Long Island. 
x ArGuTus: Nantucket; Long Island. 
 NIGRICANS: R. abbrevians Bld. Nantucket; Long Island. 
X HIsprpus: Nantucket. 
< PROCUMBENS: R. multispinus Bld. Nantucket; Long 
Island. 
< BaILEyANus: Nantucket; Long Island. R. arenicolus Bld. 
is very close to this hybrid. 
< ENsLeENt: Long Island. 
X FLAGELLARIS: Nantucket. 
AAADAADD 
RUBUS NIGRICANS Rydb. 
R. vermontanus, var. viridifolius Bld. 
R. jacens Bld. 
R. tardatus Bld. 
R. junceus Bld. 
R. Groutianus Bld. 
R. semisetosus Bld. 
X CANADENSIS: R. peculiaris Bld. 
X ALLEGHENIENSIS: R. frondisentis Bld. 
