1921] BALL—WILLOWS 427 
acuminate at apex, 5-6 cm. long, 8-ro mm. wide, on vigorous 
shoots 7-10 cm. long, 12-20 mm. wide, yellowish green, glaucous 
beneath, glabrous and strongly reticulate on both sides, margins 
cartilaginous and shallowly serrulate, or subentire: pistillate 
aments small, 2-3 cm. long, on short peduncles 1-3 mm. long, 
subtended by 2 or 3 small leaves: capsule glabrous, lanceolate, 
4-5-5 mm. long; pedicel 1-1.8 mm. long. 
This variety differs from S. Jutea chiefly in the very small and more strongly 
nerved leaves. The aments and the pedicels both are shorter than the average 
for the species. It holds much the same relation to S. Jutea as var. angustata 
does to S. cordata. The demarcation seems sharper in the present case, but 
this may be due to the limited number of specimens in hand. The name 
means starved or hungry, and is suggested by the attenuate leaves with their 
prominent ‘‘ribs.” 
The earliest collection seen by the writer was made in 1883 by L. F. Ward, 
on an island in the Yellowstone River, 12 miles above Glendive, Montana. 
The type was collected by the writer about 120 miles farther up the Yellow- 
Stone River. S. /utea is very abundant on the floodplain of the river at Forsyth, 
Montana. Several clumps of shrubs were examined, probably fifteen or twenty 
in all, but only one was referable to the present variety. It consisted of 
only two or three stems, 8-10 cm. in diameter at the base, and 5-6 m. tall, 
located scarcely more than ro rods from the north edge of the little town. It 
was recognized at sight as differing in some way from the other clumps, and 
this difference was found to be in the size of the leaves. : 
Warp’s specimen almost exactly matches the type, although the leaves 
are younger and smaller, the date of collection being six weeks earlier. The 
specimen from the Bellefourche River in South Dakota resembles S. cordata 
angustata a little more, just as the specimens of S. lutea from the Black Hills 
vary somewhat toward S. cordata. Further search probably will locate the 
variety in other parts of the Yellowstone Valley and in other districts. The 
first four specimens cited are all from one general district. The Bitter Root 
Specimen is fragmentary and not well preserved, and hence somewhat doubt- 
fully referred here. 
Souty DaKxora.—Bellefourche, along Bellefourche River, C. R. Ball 1347, 
September 19, 1908 (B). 
Nortu Daxora.—Marmarth, wet bottoms, Little Missouri River, L. C. 
Moyer 469, June 6, 1914 (B). 
Montana.—Osprey Island in Yellowstone River, 12 miles above Glendive, 
L. F. Ward, July 17, 1883 (FBb 2380); Forsyth, north edge of town, C. R. Ball 
1304, September 1, 1908 (B, type; N); Bitter Root Valley and Mountains, 
Warm Springs Creek, alt. 7500 ft., Pammel and Fawcett, August 21-Septem- 
ber 2, 1904 (B, I). 
