1910] Rehder,— A new hybrid Cornus 123 
white, 6-8 mm. high; stone ovoid, oblique, slightly compressed, 
abruptly pointed at the apex, marked with longitudinal lines and about 
o mm. high, sometimes faintly ribbed. 
The hybrid resembles in habit Cornus stolonifera, but is more up- 
right; the branches are deep purple as in that species, but marked 
during the first year with longitudinal short dark lines, but smaller, 
less numerous and less conspicuous as they are in C. rugosa. The 
leaves resemble in shape those of C. rugosa, but are distinctly 
glaucous beneath; their pubescence is more like C. stolonifera in the 
sterile shoots and more like C. rugosa in the flowering shoots, also as 
regards the pubescence of the upper surface of the leaves which in 
C. stolonifera consists of forked hairs with almost equal appressed arms, 
while in C. rugosa the arms are unequal with the longer arm spreading 
and wavy or the hairs are simple, particularly on the veins, forming a 
villous tomentum soft to the touch. On the lower surface the epider- 
mal cells bear papillae with connecting ridges. In C. stolonifera and 
the hvbrid these are more closely set around the stomata and form rings, 
while in C. rugosa they are more evenly distributed over the whole 
surface. The inflorescence resembles more that of C. stolonifera, 
while in C. rugosa the ramifications are nearly whorled and a central 
axis is hardly distinguishable. The color of the flowers is between the 
pure white of C. stolonifera and the creamy white of the C. rugosa, and 
the time of flowering lies between the two. The fruits are usually 
ovoid as in C. stolonifera, but rarely white, mostly more or less bluish; 
the stone shows the longitudinal lines of C. stolonifera, but is less com- 
pressed and sometimes faintly ribbed; from C. rugosa it differs in being 
somewhat compressed, higher than broad and distinctly pointed at the 
apex. 
New York: Seneca Park, Rochester, June 9, 1905, August 1, 1905, 
B. H. Slavin; July 15 and 31, 1906, J. Dunbar; June 16 and July 25, 
1907, B. H. Slavin. Marne: Piscataquis Co., valley of the Pisca- 
taquis River, gravelly shore, Dover, July 19, 1895, M. L. Fernald, 
No. 305. I have little doubt that the Maine specimen represents the 
same hybrid, particularly as the two supposed parent species also occur 
in the locality where it was collected. 
The villous pubescence of the under surface of the leaves, though the 
most obvious and prominent character to distinguish the hybrid from 
Cornus stolonifera, must be used with some caution, for toward the 
northeastern limit of the range of that species forms occur which also 
