BOTANICAL GAZETTE. 139 
colors of their spikes: ©. Liddoni is always fuscous or fulvous; 
C. adusta is pale or silvery tawny. The following characters 
will, I think, distinguish the two species : 
LipponI, Boott in Hook. FI. Bor. Am. li, 214. Culm 
erect or nearly so; spikes 3-6, obovoid or oblong, erect, chaffy 
at the base, fulvous, contiguous or loosely aggregated into an ob- 
long head (about 1’ long); peri ynium greenish or tawny, firm 
'n texture, lanceolate (4/’-6” long), thrice as long as the elliptic, 
brown achenium, few nerved when mature, rough on the nar- 
rowly winged margins, very gradually beaked, about the length 
of the acute, thin-margined scale. C. adusta, var. congesta, W. 
Boott, Bot. Calif. ii, 238.—Mostly at high altitudes, California 
and northward, eastward to South Park, Colorado, (John Wolfe) 
and Montana, (F. L. Seribner, 1883); said to occur on Mt. Gra- 
ham, Arizona. ; : 
C. apusra, Boott, 1. c. Top of the culm often inclined or 
somewhat nodding; spikes 6-12, globose, pale or silvery-tawny, 
mostly not contiguous, the lower often somewhat compound ; 
perigynium pale or silvery, fragile in texture, ovate or almost 
orbicular, about twice the length of the oval, mostly dark and 
shining achenium, strongly many-nerved, minutely serrate above 
on the broadly winged margins, rather abruptly beaked, about 
the length and usually rather broader than the seale. C. argy- 
rantha, Tuckm. (C, albolutescens, Schw., var. argyrantha, Olney 
Exsice, ©. adusta var. argyrantha, Bailey, Carex Cat. C albo- 
lutescens var, sparsiflora, Olney, |. ¢. (not 591 Hall’s Oregon Coll.) 
C. adusta var., Bailey 1.c.—Northeastern States, British America, 
California. 
AR. GLOMERATA, Bailey 1. c. Spikes few flowered, aggre- 
gated into a loose, mostly tawny head ; perigynium large, almost 
Wingless, nearly filled by the large, dark achenium. ©. albolu- 
tescens var. glomerata, Olney 1. e.—Mt. Desert Id., Me., (2. W. 
Greenleaf ), New Brunswick (Rev. J. Fowler), and from the Sas- 
atchewan region (Herb. Gray). 
AR. MINOR, Boott, ].c. Culm 6’—16’ high, very slender to- 
wards the top, weak and nodding at maturity, erect when young ; 
aves narrow, very long pointed ; spikes all silvery-brown, the 
Ower rather remote, long-attenuated at the base; perigynium 
evate-lanceolate, nearly nerveless. (C. pratensis, Drejer, Rev. 
nit. Car. Bor, 24. C. adusta, W. Boott, Wheeler’s Rep. 277.— 
South Park, Colorado (John Wolfe), British America, northward 
“ Greenland, eastward to Labrador. Probably a good species. 
‘ C. albolutescens var. brunnea, Olney, Hall’s Oregon Coll. No. 
90, C. adusta var. brunnea, Bailey |. ¢., is C. leporina L. 
