29. Carex Setacea Dewey. Bristly-Spiked Sedge

Fig. 896

Carex setacea Dewey, Am. Journ. Sci. 9: 61. 1825. Carex scabrior Sartw.; Boott, 111. 3: 125. 1862.

Culms 1 1/2°-4° tall and slender, erect, rough above. Leaves 1°-2° long, 1"-3" wide, shorter than the culm; sheaths red-dotted and rugulose; head narrowly oblong, 1 1/2'-2 1/2' long, 3"-5" thick, sometimes branched at the base; bracts bristle-like, longer than the spikes or shorter; spikes androgynous, ovoid or ovoid-oblong, 2 1/2"-4" long, usually close together; perigynia dull at maturity, 1 1/2" long, lanceolate or ovate-lanceolate, tapering from a more or less truncate base to a narrow rough 2-toothed beak, few-nerved on outer face; scales acuminate, short-awned.

Vermont to Ontario, south to Maryland and Kentucky. June-Aug.

30. Carex Diandra Schrank. Lesser Panicled Sedge

Fig. 897

Carex diandra Schrank, in Acta Acad. Mogunt. 49. 1782. Carex teretiuscula Gooden. Trans. Linn. Soc. 2: 163. pl. 19. 1794.

Loosely caespitose from short rootstocks, rather light green, culms slender, erect, very rough above, 1°-3° tall. Leaves 1/2'-1 1/2" wide, shorter than or sometimes equalling the culm, the lower sheaths reddish-brown dotted; bracts very small or scalelike; spikes several or numerous, staminate above, in a narrowly oblong compact or somewhat interrupted terminal cluster 1'-2' long, 5" thick or less; perigynia broadly ovoid, smooth, dark brown, very plump, hard, shining, strongly rounded and nerved on the outer side, slightly rounded and faintly nerved at base on the inner, 1'-1 1/4" long, not margined, the body slightly more than i" long, suborbicular, truncate or rounded at the base, short-stalked, tapering into a flat conic beak nearly its own length; scales thin, ovate, brownish, acute or short-awned, about equalling the perigynia; stigmas 2.

In swamps and wet meadows, Nova Scotia to Alaska, south to Rhode Island, Pennsylvania, Nebraska and British Columbia. Also in Europe and Asia. May-July.

30 Carex Diandra Schrank Lesser Panicled Sedge 89730 Carex Diandra Schrank Lesser Panicled Sedge 898

31. Carex Prairea Dewey. Prairie Sedge

Fig. 898

Carex prairea Dewey, in Wood's Classbook, 578. 1855. Carex teretiuscula var. ramosa Boott, 111. Car. 145. 1867. C. teretiuscula prairea Britton, Brit. & Br. 111. Fl. 1: 344. 1896.

Loosely caespitose from short rootstocks, the culms sharply triangular, slender, erect, rough above, 1 1/2°-4° tall. Leaves 1/2"-1 1/2" wide, shorter than culm, lower sheaths reddish-brown dotted; bracts small or scalelike; spikes many, androgynous, clusters widely separate, lower usually compound, forming a flexuous nodding head 1 1/2'-3' long, often more than 5" wide; perigynia ovoid, smooth, light brown, plump, hard, rounded and obscurely nerved on the outer side, flatfish on inner, 1 1/4"-1 1/2" long, not margined, round-truncate at base, slightly stipitate, tapering into a flat beak shorter than body; scales thin, ovate, light brown with broad hyaline margins, acuminate or short-awned, usually exceeding perigynia; stigmas 2.

In wet meadows, Quebec to British Columbia, south to Connecticut, New Jersey, Kentucky and Utah. May-July.