72 CYPERACEAE (SEDGE FAMILY) 
numerous, flattened, linear, eight to tén-flowered, spreading, in 
loose oblong or ovoid heads; stamens three; style three-parted, 
the branched tips exserted; scales straw-colored, oblong lance- 
shape, strongly nerved, much longer than the slim, three-angled, 
and pointed achene. (Fig. 36.) 
Means of control 
Drainage of the ground, followed by a cultivated crop very 
thoroughly tilled so as to destroy the tuberous rootstocks re- 
seeding heavily to red-top or timothy. 
BALDWIN’S CYPERUS 
Cyperus echindtus, Wood 
Native. Perennial. Propagates by 
seeds and by rootstocks. 
Time of bloom: July to September. 
Seed-time: August to October. 
Range: Virginia to Missouri, southward 
to Florida and Texas. 
Habitat: Dry, sandy soil; cultivated 
fields, waste places. 
This Cyperus seems to prefer dry 
and mellow soils, and often makes itself 
troublesome in strawberry and melon 
patches. It springs from short corm- 
like rootstocks, the culms ten inches 
to two feet high, slender, smooth, longer 
than the leaves, which are pale green, 
less than a quarter-inch wide, smooth 
with rough edges; the involucre has 
five to ten bracts, most of them much 
longer than the umbel; the latter has 
six to twelve unequal ascending rays, 
the heads globose or slightly oblong, 
usually about a half-inch in diameter ; 
spikelets twenty to forty, pale green or 
Fic. 37.—Baldwin’s Cyperus Somewhat yellowish, spreading, lance- 
(Cyperus echinatus). X%. cylindric or only slightly compressed ; 
