cylindric, sessile or short-peduncled, widely separate; bracts leaflike, not sheathing, 

 the lowest extending well beyond the tip of the culm; scales ovate-lanceolate, acute 

 to acuminate or short-awned, reddish-brown-tinged with green center and narrow 

 hyaline margins, one half to nearly as long as the perigynia; perigynia ovoid, 

 inflated, 4-8 mm. long, 3 mm. wide, yellowish-green or brownish, ascending or 

 ascending-spreading at maturity, the smooth bidentate beak 1.5-2 mm. long, the 

 erect teeth 0.5-1 mm. long; achene trigonous, with blunt angles, 2.5 mm. long, 

 1.7 mm. wide, obovoid, substipitate, contracted at the apex into the persistent 

 abruptly bent style. 



Wet meadows, swampy open ground or woods, forested floodplains, low wet 

 river bottoms, in N.M. (Otero, Sandoval, Rio Arriba and Taos cos.) and Ariz. 

 Coconino Co.); Nfld. to B.C., s. to Del., Ind., Mo., N.M., Ariz, and Calif.; Euras. 



50. Carex rostrata Stokes. Beaked sedge. Fig. 272. 



Closely resembling C. vesicaria, with which it possibly intergrades, but differing, 

 at least in its typical aspect, in the following features: rhizomes producing long 

 horizontal stolons; culms obtusely angled; lower leaves with well-developed blades; 

 leaves more or less strongly septate-nodulose (at least on the sheaths), the blades 

 2-12 mm. wide; basal sheaths little if at all filamentose; perigynia 3.5-8 mm. long, 

 2.5-3.5 mm. wide, at maturity ascending-spreading or spreading, the lowest some- 

 times reflexed; achenes trigonous with blunt angles, obovoid, 2 mm. long, 1.2 mm. 

 wide. C. inflata Huds. 



In marshes and bogs, in water of pools, ponds and lakes, along streams and 

 in seepage area about springs, in N.M. (Rio Arriba and Taos cos.) and Ariz. 

 (Apache and Coconino cos.); Greenl. to Alas., s. to Del., Ind., N.M., Ariz, and 

 Calif. 



51. Carex folliculata L. var. australis Bailey. Fig. 273. 



Tufted perennial; culms 4-8 dm. long. 2-4 mm. thick basally, erect; basal 

 sheaths whitish, nodulose; blades 5-10 mm. broad; spikes 3 or 4 per culm.' remote 

 except for sometimes the 2 upper ones; the uppermost spike staminate, 2-4 cm. 

 long, 2-3 mm. thick, stramineous; next lowest spike pistillate (or with a very short 

 terminal staminate portion), nearly sessile; lower spikes progressively longer- 

 peduncled and all pistillate, erect; lowest spike 15-27 mm. long. 15-23 mm. 

 broad, with 12 to 20 spreading perigynia (internodes of rachis about 1 mm. long); 

 bracts leaflike, that of the lowest spike 15-25 cm. long including the sheath; higher 

 bracts progressively reduced; the lance-acuminate scales hyaline-stramineous and 

 5-7 mm. long; perigynia lance-subulate, not at all acuminate, nearly round in 

 transection, 11-14 mm. long, greenish (drying stramineous), membranous, with 

 15 to 25 strong nerves narrower than the internerve spaces, inflated; achene 

 rounded-triangular with concave sides, up to 3.5 mm. long. 2 mm. wide, con- 

 tinuous with the long persistent slender style which basally has much the same 

 porcelaneous texture as the achene itself. C. lonchocarpa Willd. 



Infrequent or rare in e. Tex. (Hardin, Jasper. Newton and Tyler cos.), in wet 

 sand or mud, Apr. -May, rarely as late as June, a few perigynia persistent into 

 July; Coastal States, Va. to Tex. 



52. Carex Grayi Carey. 



Plants cespitose, usually 3-8 dm. tall; principal blades usually 2-3 dm. long. 

 6-12 mm. wide; pistillate spikes 1 or 2 (rarely 3). when 2 close together, globose 

 or nearly so, 2.5-4 cm. in diameter; pistillate scales ovate, much shorter than 

 and mostly concealed by the perigynia; perigynia crowded, usually 15 to 20. dull, 

 lance-ovoid, radiating in all directions, 12-18 mm. long, obconic from the base 

 to the widest portion, thence tapering to the beak, usually hispidulous below the 



532 



