Sedge Family 73 



below it staminate. Perianth none. Stamens 2-3. 

 Style 2-3-cleft, somewhat dilated at the base, continuous 

 with the ovary. Achene ovate or oblong-ovate, smooth, 

 acute with the obscure persistent base of the style. 



1. C. mariscus Californicum Wats. Stems in rather dense 

 tussocks, stout, 18-24 dm. high; leaves equaling the stem; pan- 

 icle diffuse, drooping; spikelets in clusters of 2-3, narrowly ob- 

 long, 4-6 mm. long; lower scales ovate, aciitish or acute, the 

 upper lanceolate, acute or acuminate, light brown ; achene brown, 

 ovate, attenuate above. 



" The variety has been collected in a swamp near San Gabriel (Brewer) 

 and in southern Nevada, Wheeler." Watson, Bot. Cal. 2:234. This has not 

 been seen by recent collectors, and it is doubtful if Brewer's plant came from 

 San Gabriel. 



7. CAREX L. SEDGE. 



Grass-like sedges, perennial by rootstocks, with mostly 

 .".-angled stems. Leaves 3-ranked, the upper elongated 

 or short and subtending the spikes of flowers or wanting. 

 Flowers monoecious or dioecious, solitary in the axils of 

 scales. Spikes either wholly pistillate or staminate, or 

 bearing staminate and pistillate flowers (androgynous). 

 Perianth none. Staminate flowers of 3 stamens. Pis- 

 tillate of a single pistil with a style and 2-3 stigmas 

 borne on a very short axis in the axil of a scale-like 

 bractlet (perigynium) which completely encloses the 

 achene. Achene 3-angled, lenticular or plano-convex. 



* Spikelets unisexual, all distinct and sometimes remote, staminate 

 uppermost. 



1. C. Pseudo-Cyperus Americana Hochst. Stems stout, 4-6 

 dm. high, angles sharp and scabrous ; leaves rigid, nodose, 5-10 

 mm. wide, long, tapering; spikelets 4-6, densely flowered, the 

 uppermost staminate, linear, 25-80 mm. long; pistillate spikelets 

 4-7 cm. long, 8-15 mm. wide, cylindric, approximate or the lowest 

 remote ; scales pale, attenuate to a long hispid point, lanceolate 

 or oblong, those of the staminate linear-lanceolate; perigynium 



