212 CYPERACEAE 
45. Carex Cherokeénsis Schwein. Stems and scapes 3-8 dm. tall, slender: leaves 
light green, overtopped by the scape; blades elongated, 2-5 mm. wide, rough toward the 
apex: staminate spikes 5-15, cylindric, often 2 or 3 together, all nodding from filiform 
peduncles: perigynia oblong-ovoid, numerous, 4-5 mm. long, whitish green, slightly 3- 
angled, each with a curved membranous orifice, surpassing the ovate or oblong acute 
whitish scale. 
On river banks and about swamps, Georgia and Florida to Arkansas and Texas. Spring and summer. 
46. Carex juncea Willd. Stems and scapes densely tufted, slender, 2-4 dm. tall: 
leaves deep green, as long as the scape or overtopped by it; blades very narrowly linear, 
1-1.5 mm. wide, smooth : staminate spike slender, 1-2 cm. long, peduncled : pistillate spikes 
1-3, linear, 1-3 mm. long, 3-4 mm. thick, the lower one longer peduncled than the others : 
scales ovate or lanceolate, about as long as the perigynia or shorter: perigynia spindle- 
shaped, about 5 mm. long, 3-angled, each with a rough apex and an entire orifice. 
On exposed mountain summits at very high altitudes, North Carolina and Tennessee. Summer. 
47. Carex ténuis Rudge. Stems and scapes rough above, 1-9 dm. long. Leaves 
bright green ; blades 3-5 mm. wide: lower bracts similar to the leaves: staminate spike 
short-stalked : pistillate spikes 2-5, linear, 3 mm. thick, filiform-stalked and spreading or 
drooping: scales ovate or oblong, j as long as the perigynia: perigynia spindle-shaped, 
glabrous or puberulent, faintly few-nerved, obtusely 3-angled, 6 mm. long, less than 2 mm. 
thick, each tapering into a short 2-toothed beak. 
In woods, Newfoundland to Michigan, North Carolina and Kentucky. Spring and summer. 
48. Carex débilis Michx. Stems and scapes 3-8 dm. tall, smooth: leaves deep- 
green, overtopped by the scape: blades 3-6 mm. wide, rough: staminate spike inconspic- 
uous, 1-4 cm. long, slender: pistillate spikes 3-5, linear, remote or approximate near the 
top of the scape, arching or drooping, 2-5 cm. long, not compact : scales about 3 as long as 
the perigynia: perigynia spindle-shaped, 8-10 mm. long, glabrous, 3-angled, pinched at 
the base, few-ribbed, each acuminate to a subulate 2-cleft beak, appressed to the rachis. 
In pine lands, South Carolina to Florida and Louisjana. Summer. 
49. Carex venüsta Dewey. Stems and scapes slender, 6-12 dm. tall, smooth: leaves 
light green, overtopped by the scape ; blades 3-8 mm. wide, scabrous: staminate spike 
slender, 2-5 cm. long: pistillate spikes 3-5, linear, arching or drooping, 2.5-5 cm. long, 
the upper often approximate, the lower remote: scales about as long as the perigynia : 
perigynia spindle-shaped, mostly 5-6 mm. long, acute at both ends, appressed to the rachis, 
closely pubescent, prominently few-ribbed. 
In low pine woods, North Carolina to Florida. Spring and summer. 
50. Carex oblita Steud. Stems and scapes sharply 3-angled, smooth or nearly so, 
3-9 mm. long : leaves glabrous, shorter than the stem ; blades 4-5 mm. wide: lower bract 
similar to the leaves: staminate spike solitary, filiform-stalked : pistillate spikes 3-5, 2-6 
em. long, about 5 mm. thick, loosely flowered, slender-stalked, the lower distant, droop- 
ing: scales obtuse, about 4 the length of the perigynia: perigynia 3-angled, glabrous, 6 
mm. long, less than 2 mm. thick, each tapering into a short 2-toothed beak. 
In bogs, central New York to New Jersey, North Carolina and Mississippi. Summer. 
51. Carex grisea Wahl. Stems and scapes smooth or nearly so, 3-6 dm. long : leaves 
light green, sometimes slightly glaucous: bracts similar to the leaves, much overtopping 
the spikes: staminate spike sessile: pistillate spikes 3-5, oblong, 8-25 mm. long, about 4 
mm. thick, the lower slender-stalked and distant: scales cuspidate or awned: perigynia 5 
mm. long, 2 mm. thick, beakless. 
TELS. woods and thickets, Maine to Ontario and Minnesota, North Carolina and Kansas. Spring and 
er. 
52. Carex amphibola Steud. Stems and scapes slender, 3-5 dm. long: leaves bright 
green; blades 2-4 mm. wide: bracts similar to the leaves, erect, not over 2 mm. wide, 
overtopping the spikes: staminate spike short: pistillate 2-4, 1—2.5 cm. long, less than 4 
mm. thick, loosely several-flowered, the lower on filiform stalks : scales awned, spreading : 
perigynia oblong or obovoid, firm, pointed, beakless, 3-angled, 4 mm. long, about 2 mm. 
thick. [C. grisea var. angustifolia Boott. ] 
In dry soil, New Jersey and Pennsylvania to Iowa, Florida and Texas. Spring. 
53. Carex flaccospérma Dewey. Similar to Carex grisea and C. glaucodea in habit, 
slightly glaucous. Stems and scapes 3-6 dm. tall: leaves delicate ; blades thin, the basal 
ones 6-12 mm. wide: bracts leafy: staminate spike sessile or nearly so: pistillate spikes 
2-4, oblong, erect, the lower slender-stalked : scales broadly ovate, green, 4—4 as long as 
the perigynia: perigynia oblong, 3-angled, 5 mm. long. 
x In low grounds or on shaded hillsides, southern Missouri to Texas, North Carolina and Florida 
Summer. 
