SEDGE FAMILY 



199 



Eefs. — SciRPDS CERNUUS Vahl, Enum. PI. 2:245 (1806), type loe. western part of the 

 Spanish peninsula. S. riparius Spreng. Syst. 1:208 (1825). Isolepis riparki R. Br. Prodr. Fl. 

 N. Holl. 1:222 (1810), type loe. Port Jackson, Australia. 



2. S. carinatus Gray. Dw.\rp Club-Kush. Stems tufted, slender, triangu- 

 lar, 1 to 2 iiielies liigh. shortly leaved at base; iuvolueral bract 4 to 9 lines long; 

 spikelet solitary, ovate, ly^ to 2 or 3 lines long; scales strongly keeled, acute, 

 2 to 3-nerved on the sides, the midrib exeurrent as a short beak ; achene strongly 

 triangular, globose in outline, light-brown, 34 line long, obscurely short-necked 

 at base. 



Swamps and low spots near the coast from Mendocino Co. to San Diego Co. 



Locs. — Mendocino City, Bolander 4757; San Francisco, Bolander ; Del Monte, Heller 6771. 



Eefs. — SciRPUS c.\RiN.\Tns Gray, Proc. Am. Acad. 7:392 (1867). Isolepis carinaia H. & 

 A.; Torr. Ann. Lye. N. Y. 3:349 (1836), based on spms. from New Orleans, Drummond, and 

 the Arkansas River, Nuttall. 



S. N.\NUS Spreng. Pug. 1:4 (1813), type loe. Mansfeld, Germany. Eleocliaris pygmaca 

 Torr. Ann. Lye. N. Y. 3:313 (1836). Stems capillary, flattened and grooved, 1 to 1% inches 

 high; roots ^Vith minute tubers; involucral bract present; spikelet 2 to 4 (or 8) -flowered, 

 greenish; scales ovate; bristles longer than the achene, often wanting; achene obovate. tri- 

 angular, smooth and shining. — Brackish shores or salt marshes, mdely distributed throughout 

 North America, Europe, north Africa. Occurs in Oregon and Washington (Piper and Beattie, 

 Fl. Nw. Coast, 84). California material has been referred here (Cucamonga, ace. Pac. R. Rep. 

 4:152; Honey Lake Valley, Davy 3290), but the specimens are too young for certain deter- 

 mination. 



3. 

 tufted. 



Fig. 18 

 a, sp 



S. pauciflorus Lightf. (Fig. 18.) Stems striate, 3-angled, leafless, slightly 

 very slender (214 to 41/0 inches high), from slender rootstocks; spikelet 



solitary, terminal, 2 to 3 lines long, without 



involucral bracts, few (about 3) -flowered; 



scales narrow-ovate, obtusish ; bristles 2 to 6, 



as long as the achene or longer ; stamens 3 ; 



style 3-cleft ; achene obovoid-oblong, rather 



strongly beaked. 



San Jacinto Mts. to the Sierra Nevada. 



Oregon to British Columbia, east to Maine. 



Europe, Asia. 



Locs. — Round Valley, Mt. San Jacinto, C. M. 

 Wilder 928; upper Santa Ana Caiion, San Bernar- 

 dino Mts., Hall 7608; Bonita Mdw., Tulare Co., Hall 

 L^- Babcock 5181; Truckee ranger station, L. S. Smith 

 694. 



Rof. — SciRPUS PAUCIFLORUS Lightf. Fl. Scot. 1078 

 (1777), type loe. Highlands of Scotland. 



SciRPUS PAUCIFLORUS Lightf, 

 ikelet, X 5; b, achene, X 16 



4. S. setaceus L. Stems caespitose, 4 to 5 inches high, twice as high as the 

 leaves, the liorizontal rootstocks very slender; involucral bracts 2 to 4 lines long; 

 siiikelets 1 or 2 in a place, narrow-ovate, 11 2 lines long; scales more or leas dark 

 brown with a broad green midvein ; acheiU'S cUiptic-obovoid, 14 line long, flattish 

 on one side, convex and somewliat angled on the other, longitudinally and rather 

 regularly ribbed, finely and horizontally striate between the ribs, apiculate. 



Moi.st places, Humljoldt Co. Europe, Asia, Africa, Australia. 



Loe.— Salmon Creek Valley, Tracy 4817 (det. M. L. Fernald). 



Ref. — SciRPUS SETACEUS L. Sp. PI. 49 (1753), type European. 



5. S. nevadensis Wats. Stems clustered from a creeping rootstock, 9 to 18 

 inches liigh ; h-aves Vi; to % height of the stems, i-j to % line wide, channeled, 

 involute; spikelets chestnut-brown, oblong-ovate, 4 to 10 lines long, 3 or 4 ("to 



