68 . CYPERACEAE. 



toothed awn; perigynium about 3 mm. high, elliptic or obovate, 

 coriaceous, few-flowered, yellowish-green. 



Occasional in the canyons of all the mountains and foothills. 



4. C. laciniata Boott. Stems stout, sharply angled, 6-11 dm. 

 high; leaves rather numerous, nearly equaling the stems, 4-8 mm. 

 wide; bracts very long; spikelets 4-6, cylindric; staminate 1-2, 

 commonly pedicelled, 2.5-7 cm. long, 4-6 mm. wide; pistillate 5-8 

 cm. long, 4-9 mm. wide, remote, the upper sessile, the lower long- 

 pedicelled, nodding; scales purple or ferruginous, pale in the middle, 

 ciliate, acute or with rough awn; perigynium abruptly or gradually 

 beaked, nearly entire to bidentate with serrate teeth, compressed- 

 lenticular, punctate, sparingly toothed on the upper margins. 



First collected at Santa Barbara by Nuttall. Occasional in 

 marshes in coast valleys. 



5. C. senta Boott. Stems slender, 3 dm. high, scabrous on the 

 sharp angles; leaves shorter than the stems, 2-4 mm. wide; staminate 

 spikelets 1-2; pistillate 2-3, on short peduncles, 3-5 cm. long, 4-5 

 mm. thick; scales narrowly lanceolate; perigynia ovoid or obovoid; 

 achenes light brown, orbicular, smooth, mucronulate. 



Near San Fernando, Brewer; Cienega, Davidson. 



6. C. barbarae Dewey. Stems 5-10 dm. high, leafy, glaucous, 

 sharply angled and rough at least above; bracts leaf-like, the lower 

 long; pistillate spikes 2-4, 25-75 mm. long, narrow, the lower with 

 slender pedicels, 7.5-10 cm. long, attenuate at the base, usually 

 truncate at the apex, scales white backed and brown edged, obtuse; 

 perigynium nerveless, abruptly contracted into a short distinct 

 beak. 



Occasional in marshes about Los Angeles and Santa Barbara. 



7. C. hassei Bailey. Stoloniferous by slender rootstocks; stems 

 slender or filiform, 25-50 cm. high; leaves thin, scabrous on the 

 margins, 2-4 mm. wide, long-pointed, much shorter than the stems; 

 bracts similar, the lowest slightly surpassing the inflorescence; 

 staminate spikelet oblong, acute, 1 cm. long, peduncled; pistillate 

 1-5, cylindric, the terminal often having 2-3 very short sessile 

 spikelets at base, the lowest remote and usually long peduncled; 

 scales shorter than the perigynia, green with brown margins, ovate, 

 cuspidate; perigynia green, obovoid, strongly nerved, 2-5 mm. long; 

 achenes conspicuously beaked, filling the perigynia. 



First collected on the West Fork of the San Gabriel, Hasse; 

 wet meadows, San Bernardino Valley, Parish. 



8. C. triquetra Boott. Stem 3-5 dm. high, slightly scabrous, 

 leaves pale, 2-5 mm. broad, equaling or shorter than the stem; 

 spikelets 3-5, oblong; staminate about 18 mm. long, 2 mm. broad, 

 subsessile; pistillate 12-18 mm. long, 3-4 mm. broad, erect, the 

 upper approximate, the lower pedicelled, all with abortive flowers 

 above; scales pale chestnut, ovate, numerous, margins hyaline; 

 perigynium pale, covered with long white hairs, ellipsoidal, sharply 

 3-angled, acute at each end, with a short bidentate beak, 1-4-nerved, 

 longer and broader than the scale; nutlet filling the perigynium. 



Frequent on dry ground in the Santa Monica, San Gabriel and 

 San Bernardino Mountains. 



