356 



CYPERACEAE. 



Carex tribuloides \Yahl. 



Blunt Broom Sedge. (Fig. 862.) 



Carex tribuloides Wahl. Kongl. Vet. Acad. Handl. (II.) 24. 



145. 1803. 



Carex lagopodioides Schk. Riedgr. Nachtr.-2o. f. 777. 1806. 

 C. tribuloides \ai. turbata Bailey, Mem.Torr. Club, 1:55. 1889. 



Bright green, culms usually stout, erect, roughish 

 above, 8 '-3 tall. Leaves flat, i"-3" wide, shorter 

 than or the uppermost overtopping the culm; lower 

 bract bristleform, sometimes elongated; spikes 6-20, ob- 

 long or sometimes top-shaped, blunt, densely clustered or 

 sometimes separated, 3 // -6 // long, about 2^" thick; 

 staminate flowers basal; perigynia lanceolate, thin, 

 greenish brown, flat, ascending or erect, 2 // -2^ // long, 

 y-t"-\" wide, several -nerved on each face, with a sharply 

 2-toothed, rough wing-margined beak; scales lanceolate, 

 whitish, acute, about half as long the perigynia; stigmas 2. 



In meadows. New Brunswick to Manitoba, Florida and 

 Arizona. Ascends to 2500 ft. in Virginia. July-Sept. 



Carex tribuloides Bebbii Bailey, Mem. Torr. Club, i: 55 

 More slender, spikes fewer, smaller ( about 3' ' long, commonly bractless, mostly clustered in a 

 dense head i' long; perigynia broader and shorter. Range of the type. 



Carex tribuloides moniliformis (Tuckenn. ) Britton. 

 Carex scof>aria var. moniliformis Tuckerm. Enum. Meth. 17. 1843. 

 Carex tribuloides var. reducta Bailej', Proc. Am. Acad. 22: 118. 1886. 



Slender, the culm much exceeding the leaves; spikes all or all but the uppermost separated, 

 2^"~4" long, the rachis somewhat zigzag. Maine and New Brunswick to Xew York, west to North 

 Dakota. 



193. Carex scoparia Schk. Pointed Broom 

 Sedge. (Fig. 863.) 



Carex scoparia Schk. Riedgr. Nachtr. 20. f. 775. 1806. 

 Carex scoparia var. minor Boott, 111. 116. pi. j6y. 1862. 



Culms slender, erect, roughish above, X~ 2 X * a ^- 

 Leaves less than \}/z" wide; lower bract bristle-form or 

 wanting; spikes 3-10, oblong, narrowed at both ends, 

 bright brown, 3 // -8 // long, 2 // -3 // in diameter, densely 

 many-flowered, usually aggregated into an ovoid head 

 8 // -i8 // long; stamiuate flowers basal; perigynia lanceo- 

 late, ascending or erect, 2 // ~3 // long, rather less than \" 

 wide, narrowly wing-margined, several-nerved on both 

 faces, tapering into the ciliate 2-toothed beak; scales 

 thin, brown, acuminate or cuspidate, shorter than the 

 perigynia; stigmas 2. 



In moist soil, Nova Scotia to Manitoba, Florida and Col- 

 orado. Ascends to 6200 ft. in North Carolina. July-Sept. 



/ 194. Carex leporina L. Hare's-foot Sedge. 

 / (Fig. 864.) 



II Carex leporina L. Sp. PI. 973. 1753. 

 II Culms slender, erect, roughish above, i -!, 1 ^ 3 tall. 

 // Leaves about i" wide, flat, shorter than the culm; 

 // bracts very short and scale-like or wanting; spikes 

 I I 4-7, oblong, blunt at the summit, narrowed and stam- 

 Ij inate at the base, 4 // -6 // long, about 3" thick, dark 

 brown, shining, clustered but distinct, in a terminal 

 oblong head about \' long; perigynia ascending or ap- 

 pressed, ovate -lanceolate, 2 /r long, nearly i" wide, 



a j i -\ > I! rather narrowly wing-margined, several-nerved on 



I i \\ [\ // both faces, the rough tapering 2-toothed beak nearly 



f I \ /nk /I / as ^ on as t * ie tKKU" scales lanceolate, brown, mem- 



f *\ branous, acute, narrower and shorter than the peri- 



gynia; stigmas 2. 



Eastern Massachusetts. Adventive from Europe. 

 tivc- in the Rocky Mountains. June-Aug. 



