202 



CYPERACEAE (SEDGE FAMILY) 



323. C. mariscoides. 



serrate; panicle 3- 



(0.4-1 m. high); leaves narrow (1-3 mm. wide), channeled, 

 scarcely rough-margined ; panicle 0.5-3 dm. long, 2-5 cm. 

 broad, of 2-4 umbeiliforra cymes, the rays rigidly ascend- 

 ing ; spikelets clustered in heads 8-10 

 together on few peduncles ; achene miter- 

 shaped, the truncate base slightly flaring. 

 — Bogs and wet sandy shores, either 

 fresh or brackish, N. S. to Ont., s. to 

 Fla., Ky.jind., and la. Aug.-Oct. Fig. 

 328. 



2. C. jamaicense Crantz. (Saw 

 Grass.) Tall (1-3 m.). and coarse; 

 leaves broad (0.5-1 cm.), stiff and flat, 

 the margins and midrib beneath harshly 

 -9 dm. long, the numerous rays bearing 



abundant fascicled small chestnut-colored spikelets ; achene 

 obovoid, the truncate base not flaring. (C. effusumTorr.) 

 — Shallow water, Va. to Fla. and Tex. (W. I.) Fig. 329. 



C. jamaicense. 



16. SCLERIA Bergius. Nut Rush 



Flowers monoecious ; the fertile spikelets 1-flowered, usually intermixed with 

 clusters of few-flowered staminate spikelets. Scales loosely imbricated, the 

 lower empty. Stamens 1-3. Style 3-cleft. Achene globular, stony, bony, or 

 enamel-like in texture. — Perennials, with triangular leafy 

 culms, mostly from creeping rootstocks ; flowering in summer ; 

 all in low ground or swamps. Inflorescence, in our species, 

 of terminal and axillary clusters, the lower clusters usually 

 peduncled. (Name a-KXTjpia, hardness, from the indurated 



™^ '^ * Achene smooth. 



1. S. triglomerata Michx. Culm (0.5-1 m. high) and 



broadly linear ('3.5-9 mm. icide) leaves roughish; fascicles of 



spikelets few, the lowest peduncled, the upper somewhat in 



threes; achene ovoid-globose or depressed, 2-3 mm. long, on 



an obscure crustaceous disk. — Low, usually 



sandy soil, e. Mass. and Vt. (according to John 



Torrey) to Ont., la., and south w. June-Aug. 



Fig. 330. Var. gracilis Britton. Culms 



slender (3-6 dm. long) ; leaves narrower ; 



fascicles few-floWered, the loioer (2-^-flowered) 



830 S tricriomerata ^^ ^^^y ^^^^ filiform peduncles; achene nar- 



* ' " ■ rower, 1-1.5 mm. long, acutish. (Var. minor 



Britton.) —N. Y. and N. J. 331, g. oligantha. 



2. S. oligantha Michx. Culms slender, the angles somewhat 



winged ; leaves linear (3-5 mm. wide), smooth except the scabrous 

 apex ; lateral fascicles 1 or 2, usually on long exserted peduncles ; 

 achene ovoid, on a tuherculate disk. — Woods, D. C, to Fla. and 

 Tex. May-July. Fig. 331. 



* * Achene papillose, granulose or warty. 



3. S. pauciflbra Muhl. Smoothish or slightly hairy; culm 

 slender (2-6 dm. high) ; leaves narrowly linear, 1-3 mm. broad ; 

 fascicles few-flowered, the lateral pedunculate, sessile, or want- 

 ing ; bracts ciliate ; achene globose, 1.5-2 mm. in diameter; the 

 disk a narrow ring bearing 3 pairs of distinct minute tubercles. 

 — Barrens and dryish meadows, N.J. to 0., s. to Fla. and Tex. 

 June-Aug. (W. I.) Fig. 332. 



Var caroliniana (Willd.) Wood. Very slender; leaves, culms 

 and scales very pubescent. — Local, Mass., O., Lid., and south w. 



}. S. pauci- 

 flcra. 



