Description
provided by eFloras
Culms 5–40 cm. Leaves: blades 3–20(–30) cm × 1.4–3 mm. Inflorescences: proximal bracts with well-developed blades exceeding inflorescence sheaths 2–4(–10) mm; lateral spikes with 4–20 perigynia, approximate or proximal distant, lax, 4–20(–30) × 3–5 mm, middle internodes (0.5–)0.7–1.5 mm; terminal spike usually staminate, occasionally gynecandrous, sessile or short-pedunculate, 3–10(–15) × 0.9–2 mm. Pistillate scales brown with paler or green midvein, divergent in mature fruit, ovate to ovate-circular, 1.2–2.5 × 1.1–1.8 mm, apex subacute to obtuse or cuspidate. Proximal staminate scales brown with paler or green midvein and hyaline margins, oblong-ovate, 2–3.5(–4) mm, apex obtuse to subacute. Perigynia divergent, bright orange, somewhat inflated and fleshy when mature, circular-obovate, 2.3–3.2 × 1.2–1.8 mm, smooth or minutely papillose. Achenes subcircular, 1.4–1.8 × 1–1.5 mm. 2n = 52.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon; Alaska, Calif., Colo., Conn., Idaho, Ind., Maine, Mass., Mich., Minn., Mont., Nebr., Nev., N.H., N.Mex., N.Y., N.Dak., Ohio, Oreg., R.I., S.Dak., Tex., Utah, Vt., Wash., Wis., Wyo.
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Comprehensive Description
provided by North American Flora
Carex aurea Nutt. Gen. 2: 205. 1818
Carex mulica R. Br.; Richards. Frankl. Jour. 751. 1823; ed. 2. 763. 1823. (Type from northwestern Canada.) Carex pvriformis Schw. Ann. Lye. N. Y. 1 : 69. 1824. (Type from Massachusetts.) Neskiza aurea Raf. Good Book 27. 1840. (Based on C. aurea Nutt.)
Carex aurea var. androgyna Olney, in S. Wats. Bot. King's Expl. 371, in smaller part. 1871. "Carex amcinna R. Br." Olney, in S. Wats. Bot. King's Expl. 372. 1871. Carex aurea f. colorala Farwell, Rep. Mich. Acad. 21: 361. 1920. (Type from Michigan.)
Loosely cespitose and long-stoloniferous, the stolons very slender, horizontal, yellowishbrown, the clumps medium-sized or smaU, the culms slender, erect, 0.5-5.5 dm. high, triangular, more or less roughened above, from very short to much exceeding the leaves, phyllopodic, light-brownish at base; leaves usually 4-7 to a fertile culm, more numerous on the sterile, inserted towards the base, the blades 3-25 cm. long, 2-4 mm. wide, light-green, stiflfish, flat above, channeled at base, attenuate, roughened towards the ape.x, the sheaths concave at mouth, the ligule about as wide as long; staminate spike erect, linear, sessile or shortpeduncled, 3-10 mm. long, 1.5-3 mm. wide, occasionally with a few perigynia, the scales oblong-obovate, obtusish or acutish, reddish-brown with greenish or straw-colored center and hyaline margins; pistillate spikes usually 3-5, erect, the upper approximate, short-exsertpeduncled or sessile, the lower widely separate, often nearly basal, on roughish peduncles at times 2-4 cm long; the spikes oblong to linear-oblong, 4—20 mm. long, 3-5 mm. wide, 4—20flowered, the perigynia ascending or in age spreading in few rows, alternate below or more overlapping above; bracts leaf -like, conspicuously sheathing at base, erect, the blades usually much exceeding the inflorescence, the sheaths concave at mouth, not biauriculate; cladoprophyllum prominent, perigynium-like; scales ovate or ovate-orbicular, widely spreading at maturity, shorter and narrower than the perigj'nia, short-cuspidate to obtusish, reddishbrown with conspicuous, green or yellowish-green, 3-nerved center and white-hyaline margins; perigynia orbicular-obovoid, flattened-oval in cross-section, not inflated, 2-3 mm. long, 1.5 mm. wide, coarsely ribbed, coriaceous, fleshy at maturity, translucent and golden-yellow or brownish, densely puncticulate, broadly short-stipitate, rounded at base, rounded at apex and beakless or nearly so, the orifice entire; achenes lenticular, with suborbicular face, 1.5 mm. long, 1.25 mm. wide, closely enveloped, scarcely substipitate, brownish, minutely densely puncticulate, abruptly very short-apiculate, jointed with the short, slender, blackish, scarcely exserted style; stigmas two, blackish, slender, rather short.
Type locality: "Hab. on the shores of Lake Michigan."
Distribution: Wet meadows and banks, in calcareous districts, Newfoundland to British Columbia, and southward to Connecticut, Michigan, Nebraska, and, in the mountains, to New Mexico and southern California. (Specimens examined from Newfoundland, Quebec. New Brunswick, Nova Scotia, Maine, Vermont, Massachusetts. Rhode Island, Connecticut. New York, Pennsylvania, Ontario, Michigan, Wisconsin, Minnesota, Manitoba, North Dakota, South Dakota, Nebraska, Saskatchewan, Alberta. Montana, Wyoming, Colorado. New Mexico. Utah, Nevada, California, Oregon, Washington, Idaho. British Columbia, including Vancouver Island.)
- bibliographic citation
- Kenneth Kent Mackenzie. 1935. (POALES); CYPERACEAE; CARICEAE. North American flora. vol 18(4). New York Botanical Garden, New York, NY
Carex aurea: Brief Summary
provided by wikipedia EN
Carex aurea is a species of sedge known by the common name golden sedge. It is native to much of North America, including most of Canada and the western, upper Midwest, and northeastern United States. It grows in wet habitat, often on soils of a basic pH.
Carex aurea on stream bank
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