boid-ovoid to -obovoid, in transection nearly round (fresh) to obscurely triangular 

 (dried), 4—5 mm. long, inflated, firm-membranous, dark brown, with 2 strong pale 

 nerves (or ribs) and 9 to 12 slightly less strong ones, basally rounded, apically 

 pyramidal-acuminate, passing into the definite slender beak (about 0.5 mm. long) 

 with an entire orifice; achene triangular with concave sides, about 2.3 mm. long, 

 2.8 mm. wide, apiculate, jointed with the style which entirely withers after anthesis. 

 In mud and water of streams, ponds and lakes, seepage areas, in Okla. {Water- 

 fall) and in e. and s.e. Tex., July-Oct.; Coastal States, Md. to Tex.; also Ark., 

 Tenn. and Mo. 



68. Carex glaucescens Ell. Fig. 277. 



Tufted glabrous perennial with short blackish rhizomes 2-3 mm. thick; culms 

 5-12 dm. long, erect, leafy; blades 4-8 mm. broad at the broadest point; spikes 

 4 to 7, the upper one staminate and erect, the lower ones pistillate (or some of 

 them androgynous with very short staminate portions) and downward progressively 

 longer peduncled and more nodding (at maturity!; at anthesis many of them 

 ascending); terminal staminate spike 25-40 mm. long, 5-7 mm. thick, with 

 mucronate scales 5-7 mm. long; lowest pistillate spike 2-5 cm. long, 7-9 mm. 

 thick, with 60 to 100 very close ascending perigynia and obovate reddish-brown 

 hyaline scales (with greenish midnerves subulately exserted from an emarginate 

 apex) about equaling the perigynia; lowest bract sheathless, the blade 1-4.5 mm. 

 broad and from very short to surpassing the staminate spike, the bracts of the 

 higher spikes progressively strongly reduced; perigynia elliptic to obovate in the 

 larger plane, in transection elliptic or obscurely very unequally triangular, 3-4 mm. 

 long, somewhat inflated, membranous, purplish-brown with a very pronounced 

 whitish bloom, with 2 strong nerves and 2 or 3 extremely weak scarcely visible 

 ones, basally tapered and rounded, apically tapered to a very short beak (0.2-0.3 

 mm. long) and a nearly entire orifice; achene triangular with concave sides, 2.5 

 mm. long. 2 mm. wide, apiculate, jointed with the style which entirely withers after 

 anthesis. C. verrucosa var. glaucescens (Ell.) Wood. 



In wet savannahs, in mud on the edge of lakes, ponds and streams, rather 

 frequent in e. Tex., rare in s.e. Tex., late spring-summer; Coastal States, Va. 

 to Tex. 



69. Carex lanuginosa Michx. Woolly sedge. Fig. 278. 



Perennial with branching rhizomes about 1.5 mm. thick and several cm. long 

 (often broken off in prepared specimens); culms 3-6 dm. long, strictly erect, 

 simple, in slender clumps, 2-4 mm. thick basally; blades 3-4 mm. broad, the 

 sheath-orifices U-shaped, brownish-discolored and thickened; sheaths ventrally 

 pale-brownish, basally with transverse septation between the nerves; spikes about 

 3 or 4, sessile or on very short peduncles, the upper 2 usually overlapping slightly, 

 the upper one or 2 completely or almost completely staminate or with a few female 

 flowers at the very base; female spike 25-30 mm. long, 5-7 mm. thick, with 30 

 to 60 spreading-ascending spikes; bract of lowest spike not sheathing, its blade 

 about 2 mm. broad and equaling or exceeding the staminate spike; scales lanceo- 

 late, hyaline with green midrib, the body 1.5-2 mm. long and with a subulate 

 mucro about 1 mm. long; perigynial body broadly ellipsoid, brown, firm- 

 membranous, slightly inflated, about 2.5 mm. long, densely hirsutulous as seen 

 under a lens (the nervature obscured), the beak about 1 mm. long and strongly 

 bidentate apically; achene triangular with concave sides, 1.7-2 mm. long, 1.3 

 mm. wide, sessile, short-apiculate, jointed with the very short straight style which 

 entirely withers after anthesis. 



544 



