CAREX y CYPERACE 4 695 
lar: tubercle triangular-subulate, flat, 44 aslongas the achene. In bogs, 
Oregon to Alaska, Newfoundland and Florida. 
9 CAREX L. Sp. 972. 
Perennial herbs with triangular stems, linear 2-ranked leaves 
and moneecious, dicecious or androgynous flowers borne in termin- 
al solitary or racemed spikes, each usually subtended by a leaf- 
like bract. Perianth none or rarely represented by a single bristle. 
Staminate flowers of 3 stamens with filiform filaments, usually 
all in the terminal spike. Pistillate flowers of a single pistil 
with a style and 2 or 3 stigmas, borne on a very short axis in the 
axil of a sac-like bractlet or second bractlet called the perigynium 
which completely encloses the 3-angled, lenticular or plano- 
convex achene. 
SupcENus 1 Evucarex Cosson Fl. Paris, 744. Staminate 
flowers in one or more terminal spikes, sometimes with pistillate 
flowers at the base or apex. Pistillate flowers in distinct and 
simple mostly peduncled spikes. Cross-section of the perigynium 
circular, obtusely angled or prominently trigonous in outline. 
Style mostly 3-parted and the achene triangular or triquetrous. ** /' 201 
TRIBE I Puysocarp# Drejer Symb. Car. 10. Spikes few to 
many, distinct. densely flowered. Perigynium mostly straw-color 
at maturity, papery in texture, more or less inflated, smooth, 
nerved, tapering into a beak as long or longer than the body. 
Stigmas mostly 3. 
§ 1 Pauctrtor# Tuckerman Enum, Meth. 7. Spike andro- 
gynous, the pistillate flowers at the base, few. Perigynium green- 
ish, linear-lanceolate, several times longer than the scale. 
C. pauciflora Lightf. Fl. Scot. 545, t. 6. Glabrous: stems erect or 
assurgent, very slender, 4 inches to 2 feet high: leaves very narrow, shorter 
than the stem, the lowest reduced to toothed sheaths: scales inconspicuous, 
lanceolate to ovate, deciduous: perigynium scarcely inflated, 3-4 lines 
long, about ‘ line in diameter, tapering from below the middle into a 
slender or almost subulate beak, strongly reflexed: stigmas 3. In bogs, 
Washington to Alaska, Newfoundland and Pennsylvania. 
§ 2 Vestcarr@ Tuckerman 1. c. 13. Staminate spikes com- 
‘monly 2 or more. Pistillate spikes usually long-cylindrical and 
dense. Perigynium smooth and shining, much inflated, at ma- 
turity straw-color or sometimes purple, beaked and conspicuously 
2-toothed, usually prominently few-nerved. Stigmas 3. 
C. utrieulata Boott Hook. Fl. ii, 221. Glabrous: stems stout, erect, 
2-4 feet high: leaves elongated, the upper mostly exceeding the stem, 2-6 
lines wide, the midrib prominent: bracts leaf-like: staminate spikes 2-4, 
linear, peduncled, the lower sometimes pistillate at the top: pistillate 
spikes 2-4, densely many-flowered, or sometimes looser near the base, 2-6 
inches long, the lower short-peduncled, the upper sessile or nearly so, 
_ sometimes staminate at the summit: scales lanceolate, the lower awned 
_ and slightly longer than the perigynium, the upper acute: perigynium 
ovoid, light green, 2-3 lines long, narrowed above to a sharp 2-toothed 
