Comments
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anglais
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fourni par eFloras
Carex trisperma var. billingsii is a reduced type, distinguished by its narrow leaf-blades (0.3–0.5 mm) and fewer (1–2) perigynia per spike than typical. It is known, at least, from Ontario, Quebec, Newfoundland, New Brunswick, Nova Scotia, Prince Edward Island, Maine, Massachusetts, Michigan, New Jersey, New York, Rhode Island, and Pennsylvania.
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Description
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anglais
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fourni par eFloras
Plants loosely cespitose, often in large clumps; rhizomes slender, long. Culms arching, weak, 20–70 cm. Leaves: sheaths pale brown abaxially, inner band tight, thin, hyaline, truncate at summit; ligules as wide as long; blades green, flat or channeled, 5–20 cm × 0.25–2 mm. Inflorescences nodding, 5–10 cm × 3–4 mm; proximal bracts bristlelike, 3–10 cm, exceeding inflorescences. Spikes 1–3, remote, 2–4 cm apart, containing 1–5 perigynia, ovoid, 4–6 × 3–4 mm. Pistillate scales whitish with green, 3-veined center, ovate, subequal to perigynia, apex acute (mucronate). Perigynia ascending, pale green or brownish in age, finely many-veined, ovate-elliptic, 2.5–3.7 × 1.5–2 mm, subcoriaceous; beak entire or with few small teeth. Achenes brown, elliptic-oblong, 1.75–2 × 1.25(–1.5) mm, glossy. 2n = 60.
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Distribution
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anglais
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fourni par eFloras
Greenland; St. Pierre and Miquelon; Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask.; Conn., Del., Ill., Ind., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., Ohio, Pa., R.I., Vt., W.Va., Wis.
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Habitat
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anglais
)
fourni par eFloras
Mires, especially sphagnum bogs, wet woods, lowlands; 0–1300m.
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Synonym
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anglais
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fourni par eFloras
Carex trisperma var. billingsii O. W. Knight
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Comprehensive Description
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anglais
)
fourni par North American Flora
Carex trisperma Dewey, Am. Jour. Sci. 9: 63. pi. C, f. 12. 1825.
Carex qualernaria Spreng. Svst. 3: 809. 1826. (Type from New Jersey.)
Neskiza trisperma Raf. Good Book 27. 1840. (Based on Carex trisperma Dewey.)
Loosely cespitose, in large clumps, with long, very slender, light-brown stolons, the culms weak, nearly filiform, 2-7 dm. high, exceeding the leaves, triangular, roughened above, brownish at base and clothed with the dried-up leaves of the previous year; leaves with well-developed blades 3-5 to a fertile culm, on the lower fourth or third, the blades deep-green, weak, flat or canaliculate, 5-20 cm. long, 0.25-2 mm. wide, smooth, except slightly rough towards the apex, the sheaths tight, thin and white-hyaline ventrally, conspicuously prolonged beyond base of blade and continuous with ligule; spikes 1-3, usually 2, containing 1-5 ascending perigynia and about the same number of inconspicuous basal staminate flowers, the spikes 2-4 cm. apart, 4-6 mm. long, 3-4 mm. wide, the lowest subtended by an elongate, very slender bract 3-10 cm. long, often appearing like a continuation of the culm, the second bract shorter, the uppermost merely cuspidate ; scales ovate, obtuse or acute or short-mucronate, whitish with green 3-nerved center, about width of but somewhat shorter than perigynia; perigynia planoconvex, thick, ovate-oval, 2.5-3.75 mm. long, 1.5-2 mm. wide, subcoriaceous, pale-green or in age brownish, strongly white-puncticulate, sharp-edged, finely many-nerved on both surfaces, rounded, slightly stipitate, spongy at base, tapering at apex into a minute (0.4 mm. long), entire or minutely serrulate beak, obliquely cut dorsally, emarginate, hyaline-tipped; achenes lenticular, minutely truncately-apiculate, brownish, shining, rather closely enveloped, sessile, oval-oblong, 2 mm. long, 1.25 mm. wide; style very short, jointed with achene, at length deciduous; stigmas two, slender, reddish-brown.
Type locality: Williamstown and Deerfield, Massachusetts.
Distribution: Acid soils, wet sphagnum in swampy woods or bogs. Labrador and Newfoundland to Saskatchewan, and southward to Maryland, Illinois, and Minnesota; reported from Nebraska. (Specimens examined from Labrador, Newfoundland. St. Pierre, Quebec. Prince Edward Island Nova Scotia. New Brunswick. Maine. New Hampshire. Vermont, Massachusetts. Rhode Island. Connecticut. New York. New Jersey, Delaware. Pennsylvania. Maryland. West Virginia. Ontario, Ohio Michigan. Indiana. Wisconsin. Illinois, Minnesota. Manitoba. Saskatchewan.
- citation bibliographique
- Kenneth Kent Mackenzie. 1931. (POALES); CYPERACEAE; CARICEAE. North American flora. vol 18(2). New York Botanical Garden, New York, NY
Carex trisperma: Brief Summary
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anglais
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fourni par wikipedia EN
Carex trisperma, the three-seeded sedge, is a species of flowering plant in the genus Carex, native to Canada, Greenland, and the northeastern United States. It is typically found in acidic bogs within forests.
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Carex trisperma: Brief Summary
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indonésien
)
fourni par wikipedia ID
Carex trisperma adalah spesies tumbuhan seperti rumput yang tergolong ke dalam famili Cyperaceae. Spesies ini juga merupakan bagian dari ordo Poales. Spesies Carex trisperma sendiri merupakan bagian dari genus Carex. Nama ilmiah dari spesies ini pertama kali diterbitkan oleh Dewey.
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Carex trisperma: Brief Summary
(
ukrainien
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fourni par wikipedia UK
Carex trisperma — багаторічна трав'яниста рослина родини Осокові (Cyperaceae), поширена в північній частині Північної Америки.
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Carex trisperma: Brief Summary
(
vietnamien
)
fourni par wikipedia VI
Carex trisperma là một loài thực vật có hoa trong họ Cói. Loài này được Dewey mô tả khoa học đầu tiên năm 1825.
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