Sloughs of river bottoms, wet meadows, marshes, seepage areas, and in mud 

 and water of ponds and lakes in Tex. Panhandle of Plains Country (Hemphill 

 Co.), rare, in N.M. (Colfax, Catron, Otero, Rio Arriba and Taos cos.) and Ariz. 

 (Coconino, Santa Cruz, Navajo, Apache, Mohave and Yavapai cos.); N.B. to 

 B.C., s. to Tenn., Tex., N.M., Ariz, and Calif., late spring-early summer; most of 

 temp. N.A. 



70. Carex Bushii Mack. 



Tufted perennial; culms 3-9 dm. long, basally 1.5-2.5 mm. thick, erect, the 

 basal sheaths rich-brown and quickly fading; foliage usually shortly pilose or 

 hirsute at least on the sheaths; blades 2.5-5 mm. broad at the broadest point, 

 the uppermost one usually surpassing the spikes; spikes usually 2, less commonly 

 3, overlapping; terminal spike gynecandrous, with an ovoid distal pistillate portion 

 7-10 mm. long and 7-9 mm. thick (including the scales), with ovate scales in the 

 widest part pale-hyaline, strongly cuspidate and 4-5 mm. long (longer than the 

 perigynia even at maturity), with an obconic basal staminate portion with elliptic 

 acuminate whitish hyaline scales about 4 mm. long; the lower spike(s) all pistillate, 

 ovoid, 9-14 mm. long, 7-10 mm. thick (including scales), with 12 to 25 ascending 

 perigynia; lowest bract not sheathing, about 1 mm. broad, usually about equaling 

 the terminal spike, the higher bracts greatly reduced; perigynia obovoid, in tran- 

 section usually very slightly unequally triangular, 3-5 mm. long, brown, firm- 

 membranous, with 2 strong nerves and 7 to 13 weaker slender ones (scarcely 

 visible at maturity), basally obconical and shortly rounded, apically short- 

 pyramidal and abruptly passing into the very short beak (some specimens essen- 

 tially beakless) with essentially entire orifice; achenes triangular, 2.5 mm. long, 

 1.8 mm. wide, bent-apiculate, jointed with the style which entirely withers after 

 anthesis. C. caroliniana var. ciispidata (Dew.) Shinners. 



In wet or moist sandy soil, wet meadows, swamps, ditches and borders of ponds 

 in Okla. (Waterfall), rather frequent in e. Tex., infrequent in n.-cen. Tex., spring; 

 N.E. s. to D.C. and s.w. to Kan., Okla. and Tex. 



71. Carex complanata T. & H. Fig. 279. 



Tufted perennial; culms 3-8 dm. long, basally 1-2 mm. thick, erect, the basal 

 sheaths dark-purplish; foliage often shortly pilose to hirsute on the sheaths and 

 often also on the lower parts or all of the blade; blades 1.5-3 mm. broad at the 

 broadest point, usually the uppermost one surpassing the spikes; spikes usually 

 3, less often 4, overlapping; terminal spike gynecandrous, with an ovoid-cylindrical 

 distal pistillate portion 8-11 mm. long and 5-6 mm. broad (with brownish-white 

 hyaline ovate scales, the lower ones more strongly acuminate than the upper, 

 slightly longer than the immature perigynia but about equaling the mature ones), 

 with a short obconic staminate portion with ovate acuminate brownish-white 

 hyaline scales 3-4 mm. long; lower spikes pistillate, ovoid to cylindrical, 5-12 mm. 

 long, 5-6 mm. thick, with 11 to 25 close ascending perigynia; bracts not sheath-, 

 ing, that of the lowest spike 0.5-1.5 mm. broad and usually exceeding the terminal 

 spikes, that of the middle spike much-reduced, that of the terminal spike essen- 

 tially absent; perigynia obovoid, in transection flattened-triangular to unequally 

 biconvex, 2.3-2.8 mm. long, ascending, olive-brown, firm-membranous, with 2 

 strong and 7 to 14 weak (at full maturity scarcely visible) nerves, scarcely 

 inflated, basally rounded, apically shortly acute to a nearly entire orifice; achene 

 triangular, 1.7 mm. long, 1.2 mm. wide, bent-apiculate, jointed with the style 

 which entirely withers after anthesis. C. hirsitlclla Mack. 



In wet sand in bogs, wet soil at edge of ponds and in moist sandy woods, in 

 Okla. (McCurtain Co.), e. and s.e. Tex., spring; Ont. and e. U.S. w. to Mich., 

 Mo., Okla. and Tex. 



546 



