300 PITTONIA. 
capsule about twice as long as the calyx, distinctly curved 
upwards. 
A common plant of the Colorado Rocky Mountains at all 
elevations of from 7,000 to 11,500 feet, and quite variable 
as to the degree of the pubescence. The best specimens are 
partly my own, from Bear Creek, west of Denver, collected 
in July, 1889, along with others equally complete, obtained 
by Mr. Holm partly about Gray's Peak, and partly at similar 
elevations near Leadville, in 1899. Reduced forms are com- 
mon on the plains of Wyoming and Montana, and have 
been distributed by Nelson, Rydberg and others. 
C. ANGUSTATUM. Tufted perennial, the ascending flower- 
ing stems often. a foot high, ending in a long-peduncled 
rather contracted cyme, producing from their lower nodes 
upright densely leafy sterile branches 6 inches high: leaves 
of main stem 1 inch long, half as long as the internodes, 
lance-linear, 14 lines wide below the middle, hirtellous, 
especially on the strong midvein beneath and on the margin, 
those of sterile shoots as long or even longer, very narrowly 
linear, subfalcate, acute, of twice or thrice the length of the 
internodes, pubescence of this is also of the stem hirsutulous, 
not glandular: calyx about 2 lines long, the somewhat 
appressed-villous sepals acute; corolla also small, but well 
surpassing the calyx: capsule short, not twice the length of 
the calyx, abruptly curved. 
Near Prince Albert, Saskatchewan, July, 1896, John 
Macoun, Canad. Survey, n. 12,459. The type sheet is in 
my own herbarium. The corresponding one in that of the 
Canad. Surv. show even greater dimensions, but with the 
remarkable sterile branches themselves nearly a foot high, 
and less densely leafy, the leaves of barely twice the length 
of the internodes. "The plant is said to inhabit sand hills 
on the open prairies of the region. aer 
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