342 



CYPERACEAE. 

 150. Carex Douglasii Boott. Douglas' Sedge. (Fig. 820.) 



Carex Douglasii Boott; Hook. Fl. Bor. Am. 2: 213. pi, 

 214. 1840. 



Light green, rootstock extensively creeping, culms- 

 slender, erect, smooth or nearly so, 4'-i2' tall. 

 Leaves i // wide or less, somewhat involute in drying, 

 sometimes longer than the culm, tapering to a long 

 point; spikes narrowly oblong, acute, 4 // -6 // long, 

 several or numerous in a dense terminal oblong or 

 ovoid cluster i / -2 / long; staminate flowers terminal 

 or variously distributed, whole spikes occasionally 

 staminate or the plants even dioecious; perigynia 

 ovate-lanceolate, about i^ r/ long, faintly several- 

 nerved, on both sides, narrowed at the base, the 

 slender tapering beak more than one-half as long as 

 the bod\" scales pale greenish brown, lanceolate, 

 scarious, smooth-awned, 2-4 times longer than the 

 perigynia and completely concealing them; stigmas 2. 



In dry soil, Manitoba to Nebraska and New Mexico, 

 west to British Columbia and California. June-Aug. 



151. Carex arenaria L,. Sand Sedge. 

 Sand-star. (Fig. 821.) 



Care.r arenaria L. Sp. PI. 973. *753- 



Rootstock extensively creeping, culms erect, slen- 

 der, slightly scabrous above, 4 / -i5 / high. Leaves i" 

 or less wide, very long-pointed, shorter than the culm; 

 lower bract subulate, sometimes 1%' long; spikes ob- 

 long, 3 // ~5 // long, aggregated into a terminal ovoid 

 cluster i / -2 / long, the terminal commonly staminate, 

 the middle ones staminate at the top, the lower usu- 

 ally wholly pistillate; perigyuia lanceolate, i%"-2 ff 

 long, strongly several-nerved on both sides, the flat 

 strongly 2-toothed beak nearly as long as the body 

 and decurrent on its summit; scales lanceolate, light 

 brown, long-acuminate or awned, about equalling the 

 perigynia; stigmas 2. 



On sea beaches near Norfolk, X^irginia. Adventive or 

 naturalized from Europe. June-July. 



152. Carex conjuncta Boott. Soft Fox Sedge. (Fig. 822.) 



Carex vulpina Carey, in A. Gray, Man. 541. iS4\ 



Not L. 1753. 

 Carex- conjuncta Boott, 111. 122. 1862. 



Light green, culms smooth or roughish above, 

 sharply 3-angled when fresh, flat when pressed, 

 soft, erect, i^-3 tall. Leaves shorter than or 

 sometimes equalling the culm, soft, flat, rough- 

 margined, iy-t"-$ l /i." wide; bracts small and 

 bristle-like or wanting; spikes several or numer- 

 ous, in a terminal elongated sometimes branched 

 cluster, or the lower separated, the staminate 

 flowers few, terminal; perigynia ovate-lanceolate 

 or lanceolate, pale, ij //r long, thickened at the 

 base, strongly several-nerved, tapering into a 

 roughish 2-toothed beak shorter than the body: 

 scales oblong-lanceolate, cuspidate or short awned, 

 about as long as the perigynia; stigmas 2. 



In moist meadows and thickets, New Jersey (accord- 

 ing to Bailey), southeastern Pennsylvania to Kentucky. 

 Illinois and Minnesota. June-Aug. 



