MACKENZIE: NOTES ON CAREX 617 
developed blades three to four to a fertile culm, on lower fourth, 
but not bunched, the blades flat, 2.5-4 mm. wide, usually 1-2 dm 
long. Head globose or short ovoid, 1.5-2.5 cm. long, nearly as 
wide, the spikes 5-8, closely aggregated, gynaecandrous, ovoid, 
rounded at base, round-tapering at apex, 6-10 mm. long, 6-9 mm 
wide, the staminate flowers few, the perigynia ten to twenty in 
several to many rows, appressed, the beaks not spreading; bracts 
scale-like, not prolonged. Scales ovate, acute or subcuspidate, 
light reddish-brown, with sharply defined lighter midvein and 
hyaline margins, about width of, but somewhat shorter than, 
mature perigynia. Perigynia dull green or soon straw-colored, 
ovate (rather narrowly), thick and strongly plano-convex, 5 mm. 
long, 2 mm. wide, many-striate dorsally, very faintly many-striate 
ventrally, round-tapering at base, contracted into bidentate beak, 
Narrowly margined (serrulate above) from base, the beak half 
length of body, serrulate below, slender, reddish-tinged, obliquely 
cut dorsally and hyaline at apex. Achenes lenticular, thick, 
light brown, short oblong, 2 mm. long, 1.5 mm. wide, substipitate, 
apiculate, the slender style at length deciduous. Stigmas two. 
Two specimens of this species in the herbarium of the Univer- 
sity of California arein fully mature condition and are both labeled 
“Carex Liddonii”’ var. incerta Bailey. At least two of the three 
specimens cited by W. Boott under his Carex adusta var. congesta 
belong here, and as Prof. Bailey’s Carex Liddonti var. incerta is 
based on Boott’s variety primarily, it also is to be regarded asa 
synonym of the present species, although the only specimen cited 
by him (collected by Dr. Kellogg) may belong to something else. 
In general appearance specimens of this species strongly resemble 
coarse specimens of Carex abrupta Mackenzie. The perigynia, 
however, are markedly different, as shown in the key. This is 
apparently an Oregon species which ranges southward in the Sierra 
Nevadas. 
SPECIMENS EXAMINED 
CaLirorniA: Big Tree Road, Silver Valley, 8,000 ft., Brewer 
1977, July 31, 1863 (type, in Herb. Cal., part of sheet 1060); 
Big Trees, 4,788 ft., Hillebrand 2310 (Cal., mounted with type); 
Echo Lake, Eldorado County, 7,500 ft., Brainerd 197, July 11, 
1897 (Brainerd); Meisner’s, Eldorado County, 7,600 ft., Brainerd 
198, July 17, 1897 (Brainerd); Dinsmore’s Ranch, Humboldt 
County, Tracy 4145, June 16, 1913 (K.M.). 
OreGon: Anthony Lake, Elkhorn Mountains, M. E. Peck 1, 
