This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol1", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
9: 151. 1882. Carex impressa Mackenzie, Bull. Torr. Club 37: 236.
Culms stout and generally smooth, erect, 1 1/2°-3° tall, neither purplish-tinged nor filamentose at base, the lower sheaths blade-bearing. Leaves elongated, nodulose, usually more or less scabrous, somewhat glaucous, 2"-4" wide, flat or folded at base, usually exceeding the culm; lower bract similar to the leaves, the upper reduced; staminate spikes 2-4, linear, their scales straw-colored or light purplish-tinged; pistillate spikes 2-4, cylindric, 1/2-3' long, about 5" in diameter, usually widely separate, erect, short-peduncled; perigynia narrowly ovoid, 3" long, 1 1/4" wide, firm, impressed-nerved when young, appearing nearly nerveless when mature, scarcely inflated, tapering into a 2-toothed beak, the teeth erect or slightly divergent, 1/4" long; scales ovate, the lower aristate and exceeding perigynia, the upper more acute and shorter, straw-colored or light purplish-tinged; stamens 3.
In swamps, Ohio to Kansas, Florida and Texas.
Carex striata Michx. Fl. Bor. Am. 2: 174. 1803. Not Gilib.
1792. Carex Walteriana Bailey, Bull. Torr. Club 20: 429. 1893. C. striata var. brevis Bailey, Mem. Torr. Club 1: 34. 1889.
Long-stoloniferous, the culms slender, strict, erect, slightly rough above, 1°-2 1/2° tall. Leaves narrow and elongated, smooth or roughish, 1"-2" wide, nodulose, becoming involute; lowest bract similar, often very long, the upper smaller and often almost filiform; staminate spikes I or 2, long-stalked; pistillate spikes 1 or 2, when 2 the lower remote from the upper, sessile or very short-stalked, oblong-cylindric, erect, 1/2"-2' long, 3"-4" in diameter, many-flowered; perigynia ovoid, many-nerved, slightly inflated, ascending, glabrous, or partly or wholly short-pubescent, 2"-2 1/2" long, 1 1/4" in diameter, tapering into a short 2-toothed beak, the teeth short, variable; scales ovate, short-aristate, acute or obtuse, membranous, one-half to two-thirds length of perigynia.
In pine-barren bogs, southeastern Massachusetts to Florida, near the coast. May-July.
Carex vestita Willd. Sp. PI. 4: 263. 1805.
Carex vestita var. Kennedyi Fernald, Rhodora 2: 170. 1900.
Strongly stoloniferous, culms strict, erect, 1 1/2°-2 1/2° tall, rough above, reddened and filamentose at base. Leaves distant, 1 1/2"-2 1/2" wide, not overtopping the culm; bracts narrower, short, rough on the margins; staminate spike solitary, rarely 2, sessile or short-peduncled; pistillate spikes 1-5, oblong, 4"-I4" long, 3"-4" in diameter, erect, commonly staminate at the summit, sessile or the lower very short-stalked; perigynia ovoid, ascending or the lower spreading, densely pubescent, less than I' in diameter; nerved, slightly shorter than or equalling the ovate-obtuse or acute scales; the beak white-hyaline at orifice, in age bidentate; stigmas 3.
In sandy woods, southern Maine to eastern New York and Pennsylvania, south to Georgia. May-July.