#08 - OYPERACEA CAREX 
globular or short-oblong, staminate at top. Perigynia straw- 
color, papery, more or less inflated. Stamens 3. 
C. Breweri Boott Ill. 142, t, 455. Rootstock creeping, stoloniferous: 
stems 5-18 inches high, obtusely angled, smooth, leafy at e: leaves rig- 
id, filiform, the cauline shorter than the stem: spikes dark fulvous or 
chestnut-color, oval or ovate, 6-12 lines long, 4-6 lines thick, naked: sta- 
minate flowers few: perigynia oval, much inflated and very thin, with a 
very short obliquely cut entire beak, longer and broader than the hyaline- 
margined scale. Alpine, California to Washington. 
Susgenvs 11 VIGNE Z Koch Syl. Fl. Germ. 748. 
Staminate flowers few and inconspicuous, borne at the base or 
apex of the spikes. Pistillate flowers in one to several short and 
sessile spikes which are commonly more or less aggregated into 
heads or even panicles. Crossection of the perigynium plano- 
convex in outline. Styles 2. Achenes lenticular, 
TRIBE XII ACROARRHENZ Fries Summa. 73. Staminate flow- 
ers borne at the top of the spikes, or the spikes wholly staminate 
or the plants sometimes dicecious. 
§ 1 Faripz Tuckerm. Enum. Meth. 10. Spikes tawny. or 
brown, not elongated, very densely aggregated into a continuous 
globose somewhat chaffy head. Perigynium ovate or ovate-lan- 
ceolate, nerveless or nearly so, mostly thin in texture. 
C. vernacula Bail. Bull. Torr. Bot. Club xx, 417. Stems rather stout, 
triangular, 3-30 inches high, leafy at base: leaves flat, 1-2 lines wide, 1-4 
inches long: bract leaf-like, sometimes much longer than the inflorescence: 
spikes congested into a head 6-20 lines long by 3-8 lines thick, of numerous 
small roundish ferruginous spikelets, the lower often distinct : scales ovate, 
acute, cuspidate: perigyn® ovate, contracted below to a short stipe and 
above to a stout bidentate beak, longer than the scale. In the high moun- 
tains, Washington to California and the Rocky Mountains. 
C. Hoodii Boott Hook. FI. ii, 211, t. 211. Stems slender, erect, 1-2 
feet high longer than the leaves: spikes several to many, very few-flowered, 
in a dense ovoid or oblong head 6-9 lines long: perigynia spreading, small 
and narrow, gradually contracted at both ends, green, nerveless or nearly 
so, conspicuously winged, rough on the angles, about the length of the 
brown or tawny scales. Oregon and Washington to Montana. 
Var. nervosa-Bailey Mem. Torr. Bot. Club i, 14. Very tall and 
slender, 2-3 feet high: head looser: perigynia more conspicuously wi 
on the outer face. In woods near the coast, Puget Sound to California. 
§ 2 Vunprna Kunth Enum. Pl. ii, 383. Spikelets mostly 
yellow or tawny when mature, densely aggregated or sometimes 
somewhat scattered below or even panicled. Perigynia thick in 
texture, spongy at base, mostly stipitate, conspicuously nerved. 
C. Jonesii Bailey Mem. Torr. Clubi, 16. Stems slender, erect, some- 
what stiff, 7-18 inches high, sharply angled and rough, somewhat exceed- 
ing the narrow leaves, spikes several to many; densely aggregated into a 
small oblong or ovoid naked head an inch or less long: perigynia small, 
lanceolate from a truncate base, stipitate, very strongly many-nerved, 
marginless, smooth or but slightly rough on the angles above, the long and 
brown beak nearly entire, exceeding the brown muticoge or obtuse scale. 
Jn the mountains, Washington to California. 
