SEDGE FAMILY. 309 
52. Carex aquatilis Wahl. Water Sedge. (Fig. 722.) 
Carex aquatilis Wahl. Kongl. Vet. Acad. Hand. (II.) 24: 
165. 1803. 
Glabrous, glaucous and pale green, culms rather 
stout, erect, sharp-angled above, smooth or nearly so, 
2°-4° tall. Leaves elongated, sometimes equalling 
the culm, 2’’-3 14’ wide, theirsheaths nodulose; bracts 
similar to the leaves, the lower much overtopping the 
culm; staminate spikes 1-3, stalked; pistillate spikes 
narrowly linear-cylindric, often staminate at the sum- 
mit, erect or slightly spreading, 1’-214’ long, 2//-3’’ in 
diameter, sessile and dense, or the lower narrowed 
and loosely flowered at the base and short-stalked; 
perigynia elliptic, green, nerveless, minutely beaked, 
the orifice entire; scales oblong, shorter than or equal- 
ling the perigynia and much narrower; stigmas 2. 
In swamps and along streams, Newfoundland to Alaska, 
south to Massachusetts, Pennsylvania, Ohio, Minnesota 
and British Columbia. Also in Europe. June-Aug. 
A hybrid between this species and C. stvicta is described by prokeston I. H. Bailey. 
53. Carex lenticularis Michx. Lenticular Sedge. (Fig. 723.) 
Carex lenticularis Michx. F1. Bor. Am. 2:172. 1803. 
Glabrous, pale green, culms very slender, erect, 
sharp-angled, slightly rough above, 1°-2° tall. 
Leaves elongated, rarely over 1/’ wide, shorter 
than or rarely overtopping the culm, slightly 
rough-margined, their sheaths not fibrillose; lower 
bracts similar to the leaves, usually much overtop- 
ping the spikes; staminate spikes solitary or rarely 
2, sessile or short-stalked, often pistillate above; 
pistillate spikes 2-5, clustered at the summit or 
the lower distant, sessile or the lower short-stalked, 
erect, linear-cylindric, 4/’-1’ long, 114’’-2/’ in di- 
ameter; perigynia ovate or elliptic, acute, minutely 
granulate, faintly few-nerved, appressed, tipped 
with a minute entire beak; scales green, appressed, 
shorter than the perigynia; stigmas 2. 
On shores, Labrador to the Northwest Territory, 
south to Maine, Vermont, Ontarioand Minnesota. As- 
cends to 4500 ft. in the White Mountains. June-Aug. 
54. Carex Goodenovii J. Gay. Goodenough’s Sedge. (Fig. ia) 
Carex caespitosa Gooden. Trans. Linn. Soe. 2: 195. Pl. 
2%. 1794. Noth. 1753. 
C. Goodenovit J. Gay, Ann. Sci. Nat. (II. )It:191. 1839. 
Carex vulgaris E. Fries, Mant. 3:153. 1842. 
Carex rigida vat. strictiformis Bailey, Britten’s 
Journ. Bot. 28: 172. 1890. 
Glabrous, culms stiff, erect, sharp-angled, smooth 
or sometimes rough above, 1°-2° tall. Leaves” 
elongated, smooth or nearly so, glaucous, 1//—2// 
wide, not exceeding the culm, their sheaths not 
fibrillose; lower bracts usually foliaceous, some- 
times equalling the culm; staminate spike sessile 
or stalked; pistillate spikes 2-4, all sessile or nearly 
so, erect, densely many-flowered, narrowly cylin- 
dric, 2/’-214’’ in diameter, 5/’-12’ long; perigynia 
flattened, broadly oval or oyate, faintly few-nerved, 
green, appressed, less than 1/’ long, minutely 
beaked, the orifice nearly entire; scales purple- 
brown to black with a green midvein, very obtuse, 
shorter than the perigynia; stigmas 2. 
In wet grounds, Newfoundland to Massachusetts and Pennsylvania. June-Aug. 
