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..
Carer rostrata Michx. Fl. Bor. Am. 2: 173. 1803. Not Stokes,
1787. Carex Micliauxiana Boeckl. Linnaea 40: 336. 1877. Not C.
Glabrous, whole plant yellowish, culm erect or slightly assurgent at the base, rather stiff, slender, 1°-2° high. Leaves narrow, the broadest about 2" wide, the uppermost often exceeding the culm; staminate spike terminal, sessile or very nearly so; pistillate spikes I to 3, several-many-flowered, the tipper sessile or very nearly so and closely approximate, the third, when present, remote and borne on a long stalk; bracts similar to the leaves, usually erect and overtopping the culm; perigynia lanceolate, 4"-7' long, less than 1" thick at the base, narrow, scarcely inflated, erect or spreading, tapering into a subulate 2-toothed beak, rather strongly many-nerved, about twice as long as the lanceolate or ovate, acute or short-acuminate scale; achenes oblong-obovoid, 1 1/2" long; stigmas 3.
Carex folliculata L. Sp. PI. 978. 1753-
Glabrous, light green or yellowish, culm stout or slender, erect or reclining, 1 1/2°-3 1/2° long. Leaves broad and elongated, sometimes overtopping the culm, 2"-8" wide; staminate spike stalked or nearly sessile; pistillate spikes 2-5, usually distant, all except the uppermost slender-stalked, several-many-flowered, the lower often nodding on a long stalk; bracts commonly overtopping the spikes; perigynia lanceolate, slightly inflated, ascending or spreading, rather prominently many-veined, 6"-8" long, 1 1/2" in diameter near the base, tapering from below the middle into a slender 2-toothed beak, one-third to one-half longer than the awned, broadly scarious-margined, persistent scale; achenes oblong-obovoid, 1 3/4" long; long; stigmas 3.
Carex miliaris Michx. Fl. Bor. Am. 2: 174. 1803. Carex saxatilis var. miliaris Bailey, Bot. Gaz. 9: 120. 1884.
Glabrous, culm very slender, erect, smooth below inflorescence, little filamentose at base, 1°-2° tall, the rootstocks creeping. Leaves about 1" wide, elongated, nodulose, the upper about equalling the culm; bracts similar to the leaves, often overtopping the culm; staminate spikes 1 or 2, stalked, narrowly linear; pistillate spikes 1-3, slender, oblong-cylindric, many-flowered, 4"-l' long, about 2 1/2"-3 1/2" thick; the upper sessile, the lowest more or less stalked; perigynia not inflated, ovoid, faintly few-nerved or nerveless, 1"-1 1/2" long, brown-tipped, tapering into a short, emarginate beak, slightly longer than the ovate or ovate-lanceolate, wholly or partly brown, obtusish to cuspidate scale; stigmas 2.
Borders of lakes and streams, Labrador and Hudson Bay, south to central Maine. Probably intergrades with the next. Summer.