394 



CYPERACEAE. 



Vol. I. 



101. Carex umbellata Schk. Umbel-like Sedge. 

 Fig. 968. 



Carex umbellata Schk. ; Willd. Sp. PI. 4 : 29°. 1805. 

 Carex umbellata var. vicina Dewey, Am. Journ. Sci. 11 : 



317- Pi- D. f. 13. 1826. 



Rather light green, closely tufted and matted, 

 strongly fibrillose at base, stoloniferous, culms phyllo- 

 podic, filiform, i'-6' long. Leaves i"-ii" wide, slender, 

 ascending, usually much exceeding the culm, some- 

 times i° long; staminate spike solitary, terminal, ¥ or 

 less long, commonly conspicuous; pistillate spikes 1-3, 

 all filiform-stalked from the basal sheaths or 1 or 2 of 

 them sessile or very nearly so at the base of the stami- 

 nate, oblong, 6-20-flowered, 2"-6" long; perigynia usu- 

 ally less than 2' long; body oblong-orbicular, stipitate, 

 finely pubescent, pale, obtusely 3-angled, f"-ii" long, 

 tipped with a subulate 2-toothed beak of nearly its 

 length; scales ovate-lanceolate, acuminate or short- 

 awned, the lower partly hiding the perigynia ; stigmas 3. 



Dry soil, Nova Scotia to Michigan and Pennsylvania. 

 May-July. 



Carex abdita Bicknell, with short-beaked perigynia, 

 seems to be distinct. It ranges from Quebec to New York, Saskatchewan and Oklahoma. 



102. Carex tonsa (Fernald) Bicknell. 

 Deep-green Sedge. Fig. 969. 



C. umbellata var. tonsa Fernald, Proc. Am. Acad. 37 : 



507. 1902. 

 C. tonsa Bicknell, Bull. Torr. Club 35: 492. 1908. 



Deep green, closely tufted and matted, strongly 

 fibrillose at base, stoloniferous, culms phyllo- 

 podic, filiform, i'-4' long. Leaves l"-2' wide, 

 stiff, spreading in age, usually much exceeding 

 the culm but rarely more than 8' long; staminate 

 spike solitary, terminal, i' or less long, com- 

 monly conspicuous; pistillate spikes 1-3, all fili- 

 form-stalked from the basal sheaths or 1 or 2 

 of them sessile or very nearly so at the base of 

 the staminate, oblong, 6-12-flowered, 2"-^" long ; 

 perigynia 2" long or more, the body oblong- 

 orbicular, stipitate, glabrous, except beak of peri- 

 gynia which is very sparsely hairy, pale, obtusely 

 3-angled, about 1" long, tipped with a subulate 

 2-toothed beak of its own length; scales ovate- 

 lanceolate, acuminate or short-awned, the lower 

 exceeding the perigynia ; stigmas 3. 



Dry soil, chiefly near the coast, Maine to New 

 York and New Jersey. May-June. 



103. Carex hirtifdlia Mackenzie. Pubescent 

 Sedge. Fig. 970. 



Carex pubescens Muhl. ; Willd. Sp. PI. 4: 281. 1805. 



Not Poir. 1789, nor Gilib. 1792. 

 C. hirtifolia Mackenzie, Bull. Torr. Club 37 : 244. 1910. 



Pubescent all over, bright green, but reddened at 

 base, stoloniferous, culms aphyllopodic, weak, i°-2° 

 long. Leaves flat, soft, elongated, usually shorter than 

 culm, ii"-3i" wide; lower bracts i'~3' long, occasion- 

 ally overtopping the spikes; little if at all sheathing; 

 staminate spike sessile or nearly so, sometimes with 

 pistillate flowers at its base; pistillate spikes 2-4, ob- 

 long-cylindric, rather loosely flowered, erect, 3"— 10" 

 long, 2"-2i" thick, the upper sessile, the lower sepa- 

 rated and short-stalked; perigynia sharply 3-angled, 

 obovoid, narrowed to a stipe-like base, densely pu- 

 bescent, and, including the subulate straight minutely 

 2-toothed beak, about 2" long; scales obovate, trun- 

 cate, scarious-margined, rough-awned or cuspidate, 

 about as long as the perigynia. 



In woods and thickets, Nova Scotia to North Dakota, 

 New Jersey, Kentucky and Kansas. May-Aug. 



