1915] BALL—WILLOWS 395 
There was also one specimen each of S. amygdaloides and S. lutea. 
Very interesting also were a specimen of S. Fendleriana (no. 4375), 
with mature foliage, from Rochford; three foliage specimens of 
S. Scouleriana, also from Redfern Plantation no. 2; a foliage speci- 
men of S. Geyeriana (no. 4367) from Bear Butte Creek; and 
finally a single collection of what is probably S. monticola Bebb 
(no. 4374) from South Rapid Creek, at an elevation of 6100 feet. 
By this collection four species, S. amygdaloides, S. Geyeriana, 
S. monticola, and S. Nelsonii, not previously reported, were added 
to the flora of the Black Hills. All except the first are strictly 
plants of the western mountains. The specimen identified as 
S. monticola, which consists of autumn-colored foliage collected 
September 16, is certainly not referable to either S. cordata or 
S. lutea, and with equal certainty is a species not previously 
recorded for the Black Hills. Two of the sheets of S. Scouleriana 
show only small but mature leaves, suggesting a dwarfed habit, 
and the data indicate that they come from dry situations. 
In the early spring of 1913, some fragmentary specimens col- 
lected in r912 by Messrs. T. C. Setzer and N. E. PETERSEN, of 
the Merritt Ranger Station in the Black Hills Forest Reserve, 
were sent the writer for identification. On examination these were 
found to include such Rocky Mountain species as S. glaucops 
Anderss., S. chlorophylla Anderss., S. Nelsonii Ball, and S. Geyertana 
Anderss. Of these, the first two had not been collected previously 
in the Black Hills. At the request of the writer, Mr. W. H. Las, 
of the Forest Service, kindly made immediate arrangements to have 
better material collected in 1913. As a result, there were received 
for identification, on January 21, 1914, another series of these 
same species. Careful examination confirmed the previous deter- 
minations and hence added two more species to the list of those 
known to be native to the Black Hills. This list now contains 12 
species, all native. Three out of the 12, namely, S. amygdaloides, 
S. fluviatilis, and S. Bebbiana, are found nearly across the conti- 
nent. One, S. prinoides, is an eastern species finding here nearly 
the western limit of its range. The 8 others are habitants of the 
Rocky Mountains and westward, which find the eastern limits 
of their ranges in the Black Hills. 
