Carex styloflexa Buckley

Culms densely tufted, central, ascending or lax, 24–82 cm × 0.8–1.6 mm. Leaves: basal sheaths light brown to brown; sheaths green or yellow-green, 2–26 mm; blades ascending, green or yellow-green, midrib well developed abaxially, 2 lateral veins well developed adaxially, flat, 18–44 cm × 12–14 mm, blade of overwintering leaves smooth abaxially. Inflorescences: peduncles of proximal spikes 0–12 cm, arising in proximal 1/3 of culm, distal lateral spikes not exerted; peduncles of terminal spike 0–2.8 cm; bracts 8–21 × 0.5–4 mm, blade of distal lateral spike linear, narrower than spikes; widest bract blade of distalmost lateral spike 0.5–3.4 mm wide. Spikes 3(–4) per culm; lateral spikes 6–9(–15) × 4–6 mm, distal ones separate; terminal spike 11–35 × 1.8–3 mm, exceeding distal lateral spike. Pistillate scales 2–2.5 × 0.8–1.2 mm, apex acute. Staminate scales 3.2–4.2 × 1–1.2 mm, margins hyaline or brown tinged, apex acute. Anthers 3.8–4 mm. Perigynia 4–20 per spike, closely to loosely overlapping, ratio of longer lateral spike length to perigynia number 0.8–3.4, aggregated, spreading, finely, conspicuously (22–)25–32-veined, narrowly elongate ovate, 3.5–5.5 × 1.2–1.6 mm, 1.9–2.3 times as long as achene bodies; beak excurved, 0.5–1.7 mm. Achenes elongate-obovoid, 2.2–3.2 × 1–1.4 mm. 2n = 48.

Ala., Conn., Del., D.C., Fla., Ga., Ky., La., Md., Miss., N.J., N.Y., N.C., Ohio, Pa., S.C., Tenn., Tex., Va.

Fruiting spring.

Wet, sandy, acidic soils, around springs, seeps, and small streams, under deciduous or mixed deciduous-evergreen forests; 0–1000m.

Carex styloflexa Buckl. Am. Jour. Sci. 45: 174. 1843
Carex acuminata Schw. Ann. Lye. N. Y. 1: 69. 1824. (Type from Carolina.) Not C. acuminata
Willd. 1805. Olotrema acuminata Raf. Good Book 25. 1840. (Based on Carex acuminata Schw.) Carex protracta Steud. Syn. Cyp. 234. 1855. (Type from New Orleans, Louisiana.) Carex laxiflora var. styloflexa Boott, 111. Car. 1: 37. pi. 90. 1858. (Based on C. styloflexa Buckl.) Carex styloflexa var. remotiflora Wiegand, Rhodora 24: 200. 1922. (Type from Chattahoochee,
Florida.)
Cespitose, the rootstocks slender, more or less strongly elongate, light-brown, the clumps medium-sized, the culms 2-8 dm. high, mostly lateral and aphyllopodic, or sometimes central and phyllopodic, slender, erect, or decumbent, sharply triangular, not winged, minutely roughened above, exceeding the leaves and usually the bracts, brownish-tinged at base; sterile shoots elongate, conspicuous; well-developed fertile-culm leaves (not bracts) 1 or 2, the blades flat, thin, light-green, 5-15 cm. long, 2^5-3.5 mm. wide, little roughened, the midvein prominent on the lower surface and the two mid-lateral veins on the upper; blades of the sterile shoots and the basal leaves 1-3 dm. long, 3-7 mm. wide, rougher; sheaths tight, slightly yellowish-brown-tinged, prolonged upward at mouth beyond base of blade and continuous with the long prominent ligule; stamina te spike usually long-peduncled, occasionally nearly sessile, linear, 1-4 cm. long, 2.5 mm. wide, the peduncle up to 8 cm. long, roughish, the scales oblong-obovate, obtuse, white-hyaline, usually strongly yellowish-brown-tinged with green 3-nerved center; pistillate spikes 1-4, usually 2 or 3, widely separated, the lowest and often the second on long, capillary, nodding or weak, slightly roughened peduncles, 5-9 cm. long, the upper erect, not or shortly exsert-peduncled, the spikes oblong to linear-oblong, 0.5-2 cm. long, 4-5 mm. wide, rather loosely 4-15-flowered in few rows, the perigynia ascending or somewhat spreading; lower bracts leaf-like, strongly sheathing, minutely roughened on the margins, the upper shorter and usually exceeded by the culm; scales broadly ovate, short-awned to acute, narrower than and only half the length of the perigynia, white-hyaline with 3-nerved green center, usually more or less strongly reddish-brown-tinged; perigynia narrowly obovoid, not at all inflated, obtusely triangular below, rather sharply so above, 3.5-5 mm. long, 1.5-2 mm. wide, glabrous, finely many-nerved, subcoriaceous, greenish-straw-colored, short-stipitate, long-tapering and spongy at base, tapering at apex into a conspicuous, more or less oblique beak 0.5-1 mm. long, with entire hyaline orifice; achenes obovoid, sharply triangular with concave sides, nearly filling perigynium-body, 2-2.5 mm. long, 1.5 mm. wide, sessile, granular, yellowish-brown, short-apiculate, jointed with the slender, short, bent style; stigmas three, slender, reddish-brown; anthers 4 mm. long.
Type locality: "Hab. mountains, Macon County, North Carolina."
Distribution: Dry woodlands, mostly on the coastal plain, Texas to Florida, and northward to Connecticut. (Specimens examined from Connecticut, New York, New Jersey, Pennsylvania, Delaware, Maryland, District of Columbia, Virginia, North Carolina, South Carolina, Georgia, Florida, Mississippi, Louisiana, Texas.)

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

Carex styloflexa là một loài thực vật có hoa trong họ Cói. Loài này được Buckley mô tả khoa học đầu tiên năm 1843.