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Pubescent Sedge

Carex hirtifolia Mack.

Description

provided by eFloras
Culms 25–60 cm, scabrous distally, pilose. Leaf blades to 4–8 mm wide. Spikes: lateral spikes in distal 1/2 of stem, 5–17(–22) × 4–6 mm; terminal spikes 8–20 × 1.8–3 mm. Pistillate scales 3-veined, obovate-circular, 3–5 × 1.2–2.5 mm, apex acuminate, proximal scale almost as long as perigynia, with awn 0.5–2 mm. Perigynia 3.5–5 × 1.5–1.8 mm. Achenes sessile, 2.5–2.8 × 1.2–1.5 mm. 2n = 50.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 466, 487, 490 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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eFloras.org
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Distribution

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N.B., N.S., Ont., Que.; Conn., Del., D.C., Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Minn., Mo., N.H., N.J., Ohio, Pa., R.I., Tenn., Vt., Va., W.Va., Wis.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 466, 487, 490 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
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eFloras.org
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eFloras

Flowering/Fruiting

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Fruiting late spring–early summer.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 466, 487, 490 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
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eFloras.org
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eFloras

Habitat

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Thickets, lowland forests, forested slopes; 0–1000m.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 466, 487, 490 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
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eFloras.org
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eFloras

Synonym

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Carex pubescens Muhlenberg ex Willdenow, Sp. Pl. 4(1): 281. 1805, not Poiret 1789
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 466, 487, 490 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
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eFloras

Comprehensive Description

provided by North American Flora
Carex hirtifolia Mackenzie, Bull. Torrey Club 37: 244. 1910.
Carex pubesceyis t.lxh.;V:\d.Sp.V.i:2?<. 1S05. (Type from Pennsylvania.) iiot C . pubescens
Poir. 1789; nor C. />i(fei«ns-Gilib. 1792. Edritria pubescens Raf. Good Book 26. 1840. (Based on Carex pubescens Muhl.) Diemisa pubescens Raf. Good Book 27. 1840. (Based on Carex pubescens Muhl.)
Loosely cespitose, from slender but tough much branched rootstocks, the culms 3-6 dm. high, slender, not stiff, sharply triangular, pubescent, roughened above, aphyllopodic, exceeding the leaves, brownish-reddened at base, the lowermost sheaths short-bladed ; leaves with well-developed blades usually 3 or 4 to a fertile culm, more on the sterile, not clustered near the base, not septate-nodulose, the blades softly hirsute all over, flat, flaccid, short-acuminate, erect to spreading, from short to 3.5 dm. long, 2.5-7 mm. wide, the mid-lateral nerves prominent above, the sheaths tight, but ver>thin and ciimamon-brown-tinged ventrally, soon breaking, concave at mouth, the ligule conspicuous, longer than wide; terminal spike staminate, erect, sessile or short-pedunded, Unear, subclavate, 8-20 mm. long, 2.5 mm. wide, the scales obovate-lanceolate, whitish with a bright-green acuminate or excurrent midrib; pistillate spikes 2-4, erect, sessile or slightly peduncled, contiguous or the lowest somewhat separate, oblong or Unear-oblong, 5-16 mm. long, 4-5 mm. wide, closely 10-25-flowered in few rows; lowest bract 1.5-7 cm. long, 1-3 mm. wide, leaflet-like, green, long-acuminate, sheathless or very nearly so; upper bracts much shorter; scales obovate, strongly keeled, narrower than and but little covering the perigynia, ciliate, whitish with 3-nerved green center, awned by the excurrent midribs, these about reaching the end of the perigv-nia; perig>'nia strongly triangular, not at all inflated, elliptic-obovoid, 3.5-5 mm. long, 1.5 mm. vide, loosely pubescent, nerv-eless, membranaceous, green, short-stipitate, contracted to the base and into a beak 0.75 mm. long, erect, slender, cylindric, obliquely cut, at length bidentulate; achenes closely enveloped, sharply triangular with concave sides and rather prominent angles, obovoid, 2.5 mm. long, 1.5 mm. wide, sessile, ver>short-apiculate, jointed with the somewhat thickened style, scarcely one-half length of achene; stigmas three, slender, reddish-brown.
TvpE LOCALITY (of C pubescens Muhl., on which C. hirtifolia is based): "Habitat in Pennsylvania."
Distribution: Dry woods and thickets in calcareous districts, rich soil. New Brunswick to Minnesota, and southward to the District of Columbia. Kentucky, and Kansas. (Specimens examined from New Brunswick, Quebec, Maine. New Hampshire. Vermont. Massachusetts, Connecticut, New York. New Jersey, Pennsylvania, Delaware, Maryland, District of Columbia, Ontario, Ohio, Indiana. Michigan, Wisconsin. Minnesota, Illinois, Iowa, Kentucky, Missouri, Kansas.)
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bibliographic citation
Kenneth Kent Mackenzie. 1935. (POALES); CYPERACEAE; CARICEAE. North American flora. vol 18(4). New York Botanical Garden, New York, NY
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Carex hirtifolia

provided by wikipedia EN

Carex hirtifolia, the pubescent sedge, is a species of sedge native to northeastern North America. It is the only species in Carex section Hirtifoliae.[1][2][3] The entire plant is distinctively covered soft hairs.[4]

Description

Plants of C. hirtifolia are shortly rhizomatous, forming loose tufts.[3] The leaves are M-shaped in cross-section,[3] and no more than 8 millimetres (0.3 in) wide.[4] The inflorescences comprise 2–5 spikes, the last of which is staminate (male), the others being pistillate (female) and born on stalks less than 10 mm (0.4 in) long.[3] The utricles are less than 10 mm (0.39 in) long, with a beak 0.7–1.5 mm (0.03–0.06 in) long.[3]

References

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wikipedia EN

Carex hirtifolia: Brief Summary

provided by wikipedia EN

Carex hirtifolia, the pubescent sedge, is a species of sedge native to northeastern North America. It is the only species in Carex section Hirtifoliae. The entire plant is distinctively covered soft hairs.

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wikipedia EN