1911] Blanchard,— New variety of Rubus canadensis 193 
involving a marked and clear-cut variation in a single character. 
Intermediate shades have not yet been found, nor have both colors 
been seen on the same plant. 
The occurrence of this supposed single-character variation indicates 
that Tiarella may be desirable for breeding experiments. The further 
fact that the two forms are distinguishable by their pollen (which 
follows a reduction division in the mother cells) suggests that they 
may be used in cytological and Mendelian studies. 
The experience of Dr. Coville with Epigaea! suggests that with a 
little care in regard to a few factors many of the wild plants could 
easily be brought under cultivation and exceptionally good specimens 
obtained. Moreover there is a sheet of Tiarella in the Gray Her- 
barium bearing a note dated May 11, ’86, addressed to Dr. Gray, and 
signed by M. A. C. Livermore, in which it is stated that the specimens 
are from a bed of Tiarella which originally came from Wilton, New 
Hampshire. This indicates that the plant had been successfully 
cultivated in the garden. So there is good reason to expect Tiarella 
to succeed in experimental cultures. 
Turts COLLEGE, MASSACHUSETTS. 
A NEW VARIETY OF RUBUS CANADENSIS. 
W. H. BLANCHARD. 
RuBUs CANADENSIS L. VAR. septemfoliolatus, n. var. Rubus 
nigrobaccus fruticosus erectus glaber modice elatus, caule tereti 
aculeis multis brevibus armato, foliis atrovirentibus latis proximis, 
foliolo terminali saepe in foliola tria sejuncto, deinde foliis 7-foliolatis. 
Turiones now. Caules 9-12 dm. alti, glabri, subteretes, aculeis 
multis brevibus validis 2 mm. longis, circa 15 ad unciam, armati. 
Folia 5-foliolata, magna, glabra, atrovirentia; foliola lata breve 
acuminata, contigua et incubantia, pari inferiore sessili, pari laterali 
breve petiolulato, foliolo terminali in petiolulo 2.5 cm. longo, latis- 
simo, cordato, saepe lobato vel partito, aut minus saepe in foliola tria 
diviso. 
Turiones veteres.  Inflorescentiae plus minusve cymosae aut 
interdum breve racemosae in ramulis crassis saepe frondosis 7-12 cm. 
! Coville, Frederick V. The use of acid soil for raising seedlings of the Mayflower, 
Epigaea repens. Science, N. S., Vol. XXXIII, No. 853, pp. 711-712. 
