VOL. 11] Contributions to Western Botany. 299 
November 19,aTintic, Utah. 7,000 feet altitude, leaves old, lanceo- 
late, short woolly on both sides, typical form. 
June 12, 1891, Dutch Mountain, Utah. Typical form; leaves 
broadly lanceolate, not -revolute, large, glabrous on both sides, or 
nearly so below, petiole 2 to 3 lines long, calyx white woolly and 
tips with a tuft of wool. 
July 8, 1891, Ruby Hill, Eastern Nevada, 8,500 feetaltitude. Leaves 
lanceolate, glabrous on both sides, slightly revolute, calyx and tips 
pubescent only with very short wool. 
June 20, 1892, Mt. Ibapah. Leaves broadly lanceolate, slightly 
pubescent, not white beneath, varnished, slightly revolute. 
June 23, 1892, Mt. Ibapah, Western Utah. Leaves oblanceolate 
to lance-oblong, glabrous on both sides, calyx pubescent. 
June 23, 1892, Spring Creek, Eastern Nevada, altitude about 7,000 
feet. Leaves, older ones, linear lanceolate, 3 lines wide, scarcely 
revolute, upper surface nearly glabrous, lower white with very short 
and dense wool; other leaves on the same plant linear and revolute; 
anthers nearly orbicular and emarginate above and below. 
Specimens No. 2, same locality. Leaves not revolute, lanceolate, 
an inch long, very woolly on both sides. 
August 30, 1891, Moab, Southeastern Utah. Leaves glabrous and 
varnished, linear and cylindric, 3 to 8 lines long, 1% to 1 line wide; 
young branches short woolly. This is like Watson’s type of zéri- 
catus, but with smaller leaves approaching the extreme form, with 
varnished minute leaves, collected by Coville in Southwestern Nevagia. 
June 9, 1891, Furber, Eastern Nevada. Tails of fruit 3 inches long, 
short plumose to within %4 inch of the tip, where they are bare; 
leaves linear-oblong, revolute or not revolute, very woolly or hairy 
on both sides. The length of the tails is determined by the weather. 
If it is dry they are very short and abortive; if wet, they are long. 
May 20, 1891, Desert Mountains, Utah. Leaves 3 to 6 lines 
long, % to 1 line wide, varnished, cylindrical, densely fascicled. 
May 16, 1891, Homansville, Utah. Leaves linear to lance-linear, 
glabrous or short villous, old leaves less revolute; flowers pubes- 
cent, plants less densely branched. 
July 2, 1891, Muncy, Nevada. Broadest leaves 3 lines wide and 
6 to 12 long, glabrous; narrowest, on the same plant, a line wide; 
bark darker than usual. ; 
June 19, 1891, Clifton, Western Utah. Leaves 6 lines long, 1 
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