Carex lucorum Willd.

Plants loosely cespitose; rhizomes horizontally spreading, pale brown to reddish brown, (5–)20–80 mm, slender. Culms 7–55 cm, scabrous distally; bases (remnants of old leaves) fibrous. Leaf blades pale to dark green, 0.7–3.6 mm wide, herbaceous, papillose to scabrous abaxially, papillose to scabrous adaxially, blades of distal cauline leaves poorly developed. Inflorescences with both staminate and pistillate spikes; peduncles of staminate spikes 0.7–13 mm; proximal nonbasal bracts leaflike, shorter than inflorescences. Spikes: proximal pistillate spikes 1–3 (basal spikes 0); cauline spikes overlapping or somewhat separated, with (2–)3–13 perigynia; staminate spikes 8–22.5 × 1.4–4.6 mm. Scales: pistillate scales pale or usually dark reddish brown, with narrow white margins, ovate to lanceolate, 2.7–4.3 × 0.8–2.4 mm, apex acute to long-acuminate; staminate scales obovate to lanceolate, 3.7–6.1 × 1–1.4 mm, obtuse to acute or acuminate. Anthers 1.9–4.6 mm. Perigynia yellowish green to pale olive, veinless, obovoid, 2.7–4.6 × 1.2–1.7 mm, as long as wide; beak straight, pale green to olive, occasionally with reddish brown tinge near apex, 0.9–1.6 mm, weakly ciliate-serrulate, apical teeth 0.1–0.6 mm. Stigmas 3. Achenes dark brown, obovoid to globose, obtusely trigonous in cross section, 1.3–2.2 × 0.9–1.6 mm.

Carex lucorum Wilid. (Hnum. Suppl. 63, name oniy 1813); Link, Enum. 2: 380. 1822.
Carex michifansis Dewey, in Wood, Class-Book cd. 1861. 765. 1861. (Type from Michigan.)
Carex pennsyhanica var. Bixk. Linnaea 41 : 220. 1877. (Based on C. lucorum Willd.)
Carex pennsyhanica var. dislans Peck, Ann. Rep. N. Y. State Mus. 46: 131. 1893. (Type from
I.,eroyviMc, New York.) Carex pennsyhanica var. separans Peck; Howe, Ann. Rep. N. Y. State Mus. 48: 174. 1897. (Based
on C. pennsyhanica var. dislans Peck.) Carex pennsyhanica var. lucorum Fcrnald, Proc. Am. Acad. 37: 505. 1902. (Based on C lucorum
Willd.) Carex pennsyhanica f. separans "Peck" Kiikcnth. in Engler, Pdanzenreich 4"; 446. 1909. (Ba,sed
on C. pennsyhanica var. separans Peck.)
Cespitose and long-stoloniferous, the stolons horizontal, slender, scaly and fibrillose, usually reddish, the culms 1-3 dm. high, .slender but erect, sharply triangular, roughened on angles alK)ve, from much exceeding to shorter than the leaves, strongly reddish-purple at base and clothed with the dried-up leaves of the previous year, often strongly fibrillose, the itcrilc shoots lateral, elongate, strongly aphyllopodic, reddish-purple at base, the sheaths puberulent anfl breaking and becoming filamentose; fertile culms with 2 several leaves of the year with well-developed blades, the leaves flat or canaliculate, deep-green, from very short to 3 cm. long, 1.5-2.5 mm. w^ide, the basal blades and those of the sterile shoots up to 3 dm. long and up to 3.5 mm. wide, often strongly roughened especially towards the attenuate apex; sheaths concave or truncate at mouth, the ligule short, wider than long; stamina te spike terminal, erect, sessile or short-peduncled, obclavate-linear, 1.2-2 cm. long, 2.5-3 mm. wide, the scales numerous, closely appressed, oblong-obovate, obtuse or acutish, purplish with lighter raidvein and white-hyaline margins; pistillate spikes 2 or 3, sessile or short-peduncled, contiguous, suborbicular to short-oblong, 4-12 mm. long, 4-6 mm. w^ide, containing 4-10 ascending or in age spreading-ascending perigynia; basal spikes absent; bracts squamiform, not sheathing, enlarged at base, the margins at base hyaline and usually tinged with reddishpurple, the lower shorter than the head, the upper much shorter; scales ovate to lanceolate, acute to long-acuminate, about width of and exceeding perigynia, reddish-purple with lighter center or midvein and white-hyaline margins; perigynia 3.5-4 mm. long, the body suborbicular, 1.5 mm. long and about as wide, obtusely triangular in cross-section, pubescent-puberulent (sometimes sparsely so), 2-keeled, otherwise nerveless, membranaceous, dull-green or yellowish-green, completely filled by achene, stipitate, abruptly contracted into a spongy base 0.5-0.75 mm. long and into a long beak 1.5-1.75 mm. slender, bidentate, hyaline and purplish-tinged at orifice; achenes obovoid-orbicular, 1.75-2 mm. long, 1.5 mm. thick, with convex sides and narrow angles, brown, minutely pitted, substipitate, very minutely apiculate; style slender, slightly enlarged at base, jointed with achene, deciduous; stigmas three, very slender, brown.
Type locality: "Hab. in America boreali."
Distribution: Dry open woodlands. Nova Scotia to Wisconsin, and southward to North Carolina (in the mountains). (Specimens examined from Nova Scotia, New Bnmswick, Maine, New Hampshire, Vermont, Massachusetts. Rhode Island, Connecticut, New York, New Jersey, Pennsylvania, Maryland, North Carolina, Ontario. Michigan, Wisconsin.)

Carex lucorum is a tussock-forming species of perennial sedge in the family Cyperaceae. It is native to eastern parts of Canada and north eastern parts of the United States.

Carex lucorum adalah spesies tumbuhan seperti rumput yang tergolong ke dalam famili Cyperaceae. Spesies ini juga merupakan bagian dari ordo Poales. Spesies Carex lucorum sendiri merupakan bagian dari genus Carex. Nama ilmiah dari spesies ini pertama kali diterbitkan oleh Willd..

Carex lucorum là một loài thực vật có hoa trong họ Cói. Loài này được Willd. mô tả khoa học đầu tiên năm 1814.