146 Rhodora [AucusT 
RUBUS OCCIDENTALIS, L., var. flavobaccus, n. nom. Var. pallidus, 
Bailey, White American Raspberry, Kenrick, Yellow Cap, White Cap, 
Golden Cap, Summit, etc., of horticulturists.— Differs from the spe- 
cies in having pale yellow, light yellow or amber-yellow fruit. From 
Maine to the Mississippi River, Delaware and Kentucky. Known 
to horticulturists previous to 1833. Occasional throughout. 
WESTMINSTER, VERMONT. 
THE GENUS ARNICA IN NORTHEASTERN AMERICA. 
M. L. FERNALD. 
Arnica is a genus of mostly high-northern and montane plants 
reaching its greatest development in the mountains of western North 
America. There the species are perplexingly numerous: but in the 
eastern portion of the continent only three species have been gener- 
ally recognized,— the unique 4. nudicaulis of the southern coast, the 
familiar plant of northern New England and adjacent Canada which 
has passed as 4. Chamissonis, and the Labrador 4. alpina. Several 
recent collections in northern New England, eastern Canada, and 
Labrador, show that we have on our mountains and northern river 
banks a greater development of the genus than has been imagined. 
Owing to the established conviction that one uniform species extends 
from the Gulf of St. Lawrenee to the White Mountains, the Adiron- 
dacks, and Lake Superior, the available collections of the genus are 
very inadequate; and doubtless many other species will be found, 
especially on the mountains and cliffs of eastern Quebec. The fol- 
lowing synopsis of the northeastern species, so far as yet known 
may serve as a basis for further study of these attractive plants. 
* Basal leaves tapering to the petiole. 
+ Leaves entire or with few irregular scattered teeth. 
++ Stem pubescent throughout. 
= Involucre, conspicuously villous-lanate at base. 
A. ALPINA, Olin & Ladan. Stem 0.5-2.3 dm. high, sparingly vil- 
lous below, densely so above, copiously villous-lanate at tip: leaves 
