SEDGE FAMILY 125 



-spikes 4-7, ovoid-oblong or linear-oblong, the loWer 1-3 separate, with 6-18 

 perigynia; lower bracts usually shorter than the head; scales not reddish brown 

 tinged, mostly cuspidate; perigynia nerved at base on inner face, shallowly bi- 

 dentate. Woods: B.C. — Ida. — Cahf. Submont, — Mont. Je-Au. 



35. C. Bolanderi Olney. Culms slender, erect, 4-9 dm. high, brownish- 

 tinged at the base, httle roughened beneath the head; leaf -blades 2.5-5 mm. 

 wide; spikes 4-8, linear-oblong or linear, the low^er separate, wuth 8-20 perigynia; 

 lower bracts usually shorter than the head; scales usually reddish brown tinged, 

 mostly acute or mucronate; perigynia lanceolate, 4-4.5 mm. long, nerved at 

 base on the inner face. Woods: B.C. — Calif. — X.M. — Utah — w. Slont. Sub- 

 77iont. — Mont. 



IG. OvALEs Kunth. Densely cespitose or (rarely) with short-prolonged 

 rootstocks. Culms triangular. Opaque part of sheaths not red-dotted or cross- 

 rugulose, but sometimes green-striate. Spikes two or three up to twenty, with 

 several to many perigynia, the terminal g\Tiaecandrous, the lateral pistillate or 

 gynaecandrous, simple, the inflorescence varying from capitate to moniliform. 

 Low^er bracts from inconspicuous to very conspicuous. Perigjuia varying from 

 scale-like or flat (except when distended by the achene) to thick and plano-convex, 

 the body subulate to reniform, narrowly to broadly w^ing-margined, appressed 

 or ascending or spreading, little corky-thickened at base, prominently beaked, 

 the beak bidentate, or obliquely cut becoming bidenticulate, usually serrulate on 

 margins. Style-base scarcely thickened. Achenes lenticular. Stigmas 2. 



36, C. sychnocephala Carey. Culms 1-6 dm. high, very smooth; leaf- 

 blades 1.5-3 mm. w^ide: spikes 6-15, densely aggregated into an oblong-ovoid 



Meadows 



head 1.5-3 cm. long; scales lanceolate, half the length of the peng; 

 gynia 5-6 mm. long, ner\'ed on both faces, the beak deeply bidentate. 

 and thickets; Ont. — N.Y.— la. — Mont. Plains, Jl-Au. 



■ 



37. C. athrostachya Olney. Culms 1-5 dm. high, roughened above; leaf- 

 blades 2 mm. w^ide; spikes 4r-20, densely aggregated into an ovoid head 1-2 cm. 

 long; scales lance-ovate, somewhat shorter than the perig\-nia; perig^-nia 3-4 mm. 

 long, obsoletely nerved, the beak bidentate, reddish brown at mouth. Wei 

 meadow^s and copses: Sask.— Colo.— Calif.— Alaska. Mont.—Subinont, My-S. 



38. C. tenuirostris Olney. Culms 6-9 cm. high, nearly smooth; leaf-blades 

 1.5-2.5 mm. wide; spikes 4-5, densely aggregated, ovoid, 5 mm. long, 3-4 mm. 

 w-ide; scales ovate, acute, light brownish, with hyalme margins; pengjmia 8-13, 

 ascending, 3 mm. long, 1 mm. wide, lanceolate, nerved ventrally, tapermg mto 

 a beak 1 mm. long. C. macloviana f. involucrata Kiikenth. Mountain meadows: 

 Mont.— Colo.— Calif.— Wash. M ont —Submont , My-Au. 



39. C. adusta Boott. Cubns 2.5-7 dm. high, nearly smooth; leaf-blades 

 2-3 mm. wide; spikes 3-15, the lower only shghtly separate; scales ovate, straw- 

 colored, with greenish midvein; perigynia broadly ovate, 4-5 mm. long, 2-2.5 

 mm. wade, rather abruptly beaked. C. pinguis BaQey. Dry soil: ^ew^.— 

 N.Y. — Minn.--Sask. — Mack. Plain. Je-S. 



40. C. petasata Dewey. Culms 3-8 dm. high, nearly smooth; leaf-blades 

 2-3 mm. wide; spikes 3-6, aggregated; scales ovate, reddish browTi tmged and 

 hyaline-margined; perig>Tiia broadly lanceolate, 2.25 mm. w-ide, round-tapering 

 at base, tapering into the beak, which is 2 mm. long. C. Liddomi Boott. Mead- 

 ows and open woods: Sask.— Colo.— Xev.— Wash. Submont,^ Mont. Je-b. 



41. C. aenea Fernald. Cuhns 4-9 dm. high, rough beneath the head; leaf- 

 blades 2.5-4 mm. wide; spikes 3-12, 7-24 mm. long, 5-7 mm thick; scales ovate, 

 light brownish tinged, hyaline-margined; perig>'nia ascending oyate^ 4 mm. 

 long, 2 mm. wide, rounded at base, tapering into a beak half the leiigth of the 

 body. ''C.foenea Willd." of our range. Dry places and open woods: l^b.— 

 Conn.— Alta.— B.C.— Yukon. Boreal— Mont. My-Jl. 



42. C. Crawfordii Fernald. Cubns 2-6 dm. high, rough beneath the head; 

 leaf-blades 1-3.25 mm. wide; spikes 3-12, 5-11 mm. long, 3-5 mm. wide, rather 

 closely aggregated, w^ell-defined; scales lance-ovate, acute or acuminate, browTi- 

 ish; perigynia erect-ascending, brownish, 4 mm. long, about 1 mm. wide, obscurely 



