340 



CYPERACEAE 



155. Carex oregonensis Olney. 

 Oregon Sedge. Fig. 831. 



Carcx oregonensis Olney, Proc. Am. Acad. 8: 407. 1872. 

 Carex halliana Bailey, Bot. Gaz. 9: 117. 1884; not Carex hallii Olney 

 1871. 



Rootstocks slender, woody, creeping, the culms 1.5-4 dm. 

 high, rigid, smooth, sharply angled, the basal sheaths spar- 

 ingly reddish purple. Leaves clustered towards base, the 

 blades thick and rigid, glabrous, 3-5 mm. wide, canaliculate, 

 mostly exceeding the culms ; terminal 2-3 spikes staminate, 

 linear, 8-16 mm. long ; pistillate spikes 3-4, 1.5-4.5 cm. long, 

 4.5-6 mm. wide, approximate or the lower more or less sepa- 

 rate, erect-appressed. closely flowered above or loosely 

 below, the peduncles little exserted, the 20—10 perigynia 

 appressed-ascending; lowest bract exceeding culm; scales 

 ovate, acute to cuspidate, chestnut brown with hyaline mar- 

 gins and 3-nerved green center ; perigynia ovoid, obtusely 

 triangular, 4—5 mm. long, 2-2.5 mm. wide, densely short- 

 pubescent, rounded at base, tapering into a bidentate beak 

 one-third to one-half length of body, the teeth 0.5 mm. long ; 

 achenes triangular, jointed with the style ; stigmas 3. 



Mountain meadows, Boreal Zone; from southern Washington to 

 Siskiyou County, California. Type locality: Oregon. 



156, Carex lanuginosa Michx. 

 Woolly Sedge. Fig. 832. 



Carex lanuginosa Michx. Fl. Bor. Am. 2: 175. 1803. 

 Carex pellita Muhl. in Willd. Sp. PI. 4: 302. 1805. 

 Carex watsoni Olney, Bot. King's Exped. 370. 1871. 

 Carex filiformis latifolia Boeckl. Linnaea 41: 309. 1877. 



Rootstocks Stout, long-creeping, the culms stoutish, 

 more or less reddened and hlamentose at base, 6-9 dm. 

 high, sharp angled and rough above. Leaf-blades flat, 

 2-4 mm. wide, rough ; staminate spikes 1-3, 3-4 mm. 

 wide, up to 3 cm. long, distant; pistillate spikes 1-3. 

 oblong-cylindric, 1-5 cm. long, 5-7 mm. wide, sessile or 

 short-peduncled, closely flowered with 25-50 perigynia; 

 lower bracts mostly exceeding the culm; scales lanceo- 

 late, acuminate or aristate, narrower than and shorter or 

 longer than the perigynia, reddish-brown tinged, the 

 margins hyaline ; perigynia ovoid, 2.5-3.5 mm. long, 2 mm. 

 wide, densely pubescent, the nerves obscure, rounded at 

 base, abruptly short-beaked, the beak bidentate. the teeth 

 0.5-1 mm. long; achenes triangular, jointed with style; 

 stigmas 3. 



Swampy places. Transition Zone; Nova Scotia to British Co- 

 lumbia, south to District of Columbia, Missouri, New Mexico, 

 and southern California. Type locality: "ad lacus Mistassins," 

 Canada. 



157. Carex lasiocarpa Ehrh. 

 Slender Sedge. Fig. 833. 



Carex lasiocarpa Ehrh. in Hannoev. Magaz. 9: 132. 1784. 

 Carex splendida Willd. Prodr. Fl. Berol, 33, pi. 1, f. 3. 1787. 

 Carex filiformis Good. Trans. Linn. Soc. 2: 172. pi. 20, /. 5. 1794; 



not L. 



Cespitose, freely long stoloniferous. the stolons tough, 

 slender, the culms 3-10 dm. high, slender but stiff, smooth 

 or roughened above, obtusely angled, strongly reddened and 

 filamentose at base. Leaves shorter than the _ culm, the 

 blades very narrow and attenuate prolonged, involute. 2 

 mm. wide or less, rough on the inrolled margin ; staminate 

 spikes 1-3. usually 2. long-peduncled. 3-6 cm. long; pistil- 

 late spikes 1-3, cylindric, 1-5 cm. long, about 6 mm. thick, 

 erect, sessile or the lower distant and short-peduncled ; 

 bracts leaf-like, the lowest about equalling the culm ; scales 

 ovate, shorter than or equalling the perigynia. acute or short- 

 awned, green with hyaline margins and reddish brown 

 tinged; perigynia oval-ovoid, ascending, 3-3.5 mm. long. 1.75 

 mm. thick, densely pubescent, green, coriaceous, contracted 

 at base, tapering into the short-bidentate beak, the teeth 

 0.5-1 mm. long, achenes triangular ; style slender, jointed 

 with the achene ; stigmas 3. 



Sphagnum swamps. Transition Zone; Newfoundland to British 

 Columbia, south to New Jersey, Iowa, Colorado, and Washington. 

 Type locality: Europe. 



