301 
Sotipaco Raputa Nutt. Journ. Acad. Phila. 7: 102. 1834. 
Found for the first time east of the Alleghenies on August 
18th, 1891, by Mr. Heller and myself growing on dry hillsides, 
just west of the Falls mountains, Stanley county, North Carolina, 
and observed for several succeeding years. This is an interesting 
addition to the eastern flora. : 
HELIANTHUS OCCIDENTALIS Riddell, Suppl. Cat. Ohio Pl. 13. 1836. 
This prairie species occurs in a meadow near Logansville, 
Georgia, about twenty-five miles east of Atlanta. This seems to 
be the first record of its occurrence east of the Blue Ridge. 
Notes on Potentilla.—Ill. 
By P. A. RypDBERG. 
With the exception of two species, viz., the white-flowered 
P. tridentata Soland., and the introduced P. nemoralis Nestl., all the 
North American perennial species with ternate leaves can be 
divided into two natural groups, viz., the Viveae, with leaves densely 
white-tomentose beneath, and the /igidae,withouttomentum. Both 
groups consist of plants generally less than 2 dm. high and often 
more or less caespitose. The style is terminal or nearly so, filiform 
but short, in all, except P. fadcllifolia, not longer than the mature 
achenes, All the species are arctic or alpine. 
To the Miveae belong the following: 
POTENTILLA VILLOSA Pall.; Pursh, Fl. Am. Sept. 353. 1814. 
P. fragiformis villosa Regel & Tiling, Fl. Ajan. 85. 
Watson follows Regel & Tiling in placing P. villosa as a variety 
under P. fragiformis. The two resemble each other in one im- 
portant character, viz., the broadly oval obtuse bractlets, which, as 
well as the calyx, enlarge considerably in fruit. P. villosa differs 
from P. fragiformis, however, in the leaves as well as in the flowers; 
those of the former are much thicker, densely silky above (rarely gla- 
brate), and densely floccose and with prominentveins beneath. The 
flowers are about one-half larger than those of Sragiformis. From 
all the species of the group it differs in the large 2-3 cm. wide 
