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{{#Wiki_filter:Carex longii in Flora of North America @ efloras.org All Floras Advanced Search FNA Vol. 23 Page 255, 336, 337, 362, 363, 364, 367, 368 , Login l eFloras Home l Help FNA l Family List l FNA Vol. 23 l Cyperaceae l Carex 146. Carex longii Mackenzie, Bull. Torrey Bot. Club. 49: 373. 1923.
{{#Wiki_filter:Carex longii in Flora of North America @ efloras.org Search All Floras   Advanced Search FNA Vol. 23 Page 255, 336, 337, 362, 363, 364, 367, 368,                                                                                                                                                                                                                                                                                                                               Login l eFloras Home l Help FNA l Family List l FNA Vol. 23 l Cyperaceae                 l Carex 146. Carex longii Mackenzie, Bull. Torrey Bot. Club. 49: 373. 1923.
Plants densely cespitose. Culms 30-120(-140) cm; vegetative culms with few leaves clustered at apex. Leaves: sheaths adaxially c onspicuously green-veined nearly to collar, with a narrow hyaline band or sharp Y-shaped hyaline region at collar; adaxially fir m, summits U-shaped, finely papillose; distal ligules 1.8-4.4(-6) mm; blades 2-4(-6) per fertile culm, 8-30 cm x 2-4.5 mm.
Plants densely cespitose. Culms 30-120(-140) cm; vegetative culms with few leaves clustered at apex. Leaves: sheaths adaxially conspicuously green-veined nearly to collar, with a narrow hyaline band or sharp Y-shaped hyaline region at collar; adaxially firm, summits U-shaped, finely papillose; distal ligules 1.8-4.4(-6) mm; blades 2-4(-6) per fertile culm, 8-30 cm x 2-4.5 mm.
Inflorescences +/- erect, usually open, green to brown, 1-4.5(-6) cm x 5-14 mm; proximal internode 1-14 mm; 2d internode 3-8 mm; p roximal bracts scalelike, often with bristle tips. Spikes 3-10, distinct, ellipsoid to ovoid, 6-13(-17) x 3.8-7 mm, base rounded or obtuse, apex obtuse to broadly acute; staminate portion 2 mm or less. Pistillate scales white-hyaline, becoming pale silvery
Inflorescences +/- erect, usually open, green to brown, 1-4.5(-6) cm x 5-14 mm; proximal internode 1-14 mm; 2d internode 3-8 mm; proximal bracts scalelike, often with bristle tips. Spikes 3-10, distinct, ellipsoid to ovoid, 6-13(-17) x 3.8-7 mm, base rounded or obtuse, apex obtuse to broadly acute; staminate portion 2 mm or less. Pistillate scales white-hyaline, becoming pale silvery brown with age, with pale or green center, broadly lanceolate, 2.2-3.7 mm, shorter and narrower than perigynia, apex obtuse. Perigynia appressed-ascending, green to drab brown, conspicuously 5-many-veined on each face, obovate, flat except over achene, 3-4.6 x 1.6-2.6(-2.8) mm, 0.4-0.5 mm thick, margin flat, including wing 0.5-0.8 mm wide; beak green to brown at tip, flat, broadly triangular, ciliate-serrulate, abaxial suture with conspicuous white hyaline margin, distance from beak tip to achene 1.4-2.2 mm. Achenes oblong, 1.3-1.7 x 0.7-1 mm, 0.4-0.5 mm thick, apiculum less than 0.4 mm; style straight. 2n = 58, 62.
 
Fruiting early-mid summer (fall in southern part of range). Wet or seasonally wet, sandy soils, fields, thickets, ditches, pond edges, open woods, occasionally bogs; 0-800 m; N.S., Ont.; Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Ky., La., Maine, Md., Mass., Mich., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., Wis., W.Va.; Mexico; West Indies (Haiti);
brown with age, with pale or green center, broadly lanceolate, 2.2-3.7 mm, shorter and narrower than perigynia, apex obtuse. Per igynia appressed-ascending, green to drab brown, conspicuously 5-many-veined on each face, obovate, flat except over achene, 3-4
.6 x 1.6-2.6(-2.8) mm, 0.4-0.5 mm thick, margin flat, including wing 0.5-0.8 mm wide; beak green to brown at tip, flat, broadly triangular, ciliate-serrulate, abaxial suture with conspicuous white hyaline margin, distance from beak tip to achene 1.
4-2.2 mm. Achenes oblong, 1.3-1.7 x 0.7-1 mm, 0.4-0.5 mm thick, apiculum less than 0.4 mm; style straight. 2n = 58, 62.
Fruiting early-mid summer (fall in southern part of range). Wet or seasonally wet, sandy soils, fields, thickets, ditches, pond edges, open woods, occasionally bogs; 0-800 m; N.S., Ont.; Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Ky., La., Maine , Md., Mass., Mich., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., Wis., W.Va.; Mexico; Wes t Indies (Haiti);
Bermuda; Central America; South America; introduced Pacific Islands (Hawaii); New Zealand.
Bermuda; Central America; South America; introduced Pacific Islands (Hawaii); New Zealand.
Carex longii is introduced in the Hawaiian Islands and New Zealand.  
Carex longii is introduced in the Hawaiian Islands and New Zealand.
 
Several regional floras have incorrectly applied the name Carex albolutescens to C. longii (P. E. Rothrock 1991). In the southern part of the range, decumbent culms of C. longii can root at their nodes during the fall and produce flowering culms the following spring. A similar habit of vegetative spread is frequent in C. tribuloides, less common in C. albolutescens, C. ozarkana, and C.
Several regional floras have incorrectly applied the name Carex albolutescens to C. longii (P. E. Rothrock 1991). In the souther n part of the range, decumbent culms of C. longii can root at their nodes during the fall and produce flowering culms the follow ing spring. A similar habit of vegetative spread is frequent in C. tribuloides, less common in C. albolutescens, C. ozarkana, an d C. projecta, and rare in C. cristatella, C. scoparia and C. vexans.
projecta, and rare in C. cristatella, C. scoparia and C. vexans.
P. E. Rothrock et al. (1997) reported putative hybrids between Carex longii and C. straminea.  
P. E. Rothrock et al. (1997) reported putative hybrids between Carex longii and C. straminea.
 
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Related Objects Image Gallery l    Distribution Map Map l    Illustration Illustration Related Links (opens in a new window)
Treatments in Other Floras @ www.efloras.org Flora of Missouri Other Databases W3TROPICOS IPNI l eFlora Home l People Search l Help l ActKey l Hu Cards l Glossary l http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=2423572973/7/2007 11:05:37 AM}}
Treatments in Other Floras @ www.efloras.org l    Flora of Missouri Other Databases l    W 3 TROPICOS l    IPNI l eFlora Home l People Search l Help l ActKey l Hu Cards l Glossary l http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=2423572973/7/2007 11:05:37 AM}}

Latest revision as of 08:34, 23 November 2019

Report from Flora of North America Carex Longii in Flora of North America
ML070720281
Person / Time
Site: Susquehanna  Talen Energy icon.png
Issue date: 03/07/2007
From:
Susquehanna
To:
Office of Nuclear Reactor Regulation
ALICIA MULLINS 301-415-1224
References
Download: ML070720281 (1)
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Carex longii in Flora of North America @ efloras.org Search All Floras Advanced Search FNA Vol. 23 Page 255, 336, 337, 362, 363, 364, 367, 368, Login l eFloras Home l Help FNA l Family List l FNA Vol. 23 l Cyperaceae l Carex 146. Carex longii Mackenzie, Bull. Torrey Bot. Club. 49: 373. 1923.

Plants densely cespitose. Culms30-120(-140) cm; vegetative culms with few leaves clustered at apex. Leaves: sheaths adaxially conspicuously green-veined nearly to collar, with a narrow hyaline band or sharp Y-shaped hyaline region at collar; adaxially firm, summits U-shaped, finely papillose; distal ligules 1.8-4.4(-6) mm; blades 2-4(-6) per fertile culm, 8-30 cm x 2-4.5 mm.

Inflorescences +/- erect, usually open, green to brown, 1-4.5(-6) cm x 5-14 mm; proximal internode 1-14 mm; 2d internode 3-8 mm; proximal bracts scalelike, often with bristle tips. Spikes 3-10, distinct, ellipsoid to ovoid, 6-13(-17) x 3.8-7 mm, base rounded or obtuse, apex obtuse to broadly acute; staminate portion 2 mm or less. Pistillate scales white-hyaline, becoming pale silvery brown with age, with pale or green center, broadly lanceolate, 2.2-3.7 mm, shorter and narrower than perigynia, apex obtuse. Perigynia appressed-ascending, green to drab brown, conspicuously 5-many-veined on each face, obovate, flat except over achene, 3-4.6 x 1.6-2.6(-2.8) mm, 0.4-0.5 mm thick, margin flat, including wing 0.5-0.8 mm wide; beak green to brown at tip, flat, broadly triangular, ciliate-serrulate, abaxial suture with conspicuous white hyaline margin, distance from beak tip to achene 1.4-2.2 mm. Achenes oblong, 1.3-1.7 x 0.7-1 mm, 0.4-0.5 mm thick, apiculum less than 0.4 mm; style straight. 2n = 58, 62.

Fruiting early-mid summer (fall in southern part of range). Wet or seasonally wet, sandy soils, fields, thickets, ditches, pond edges, open woods, occasionally bogs; 0-800 m; N.S., Ont.; Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Ky., La., Maine, Md., Mass., Mich., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., Wis., W.Va.; Mexico; West Indies (Haiti);

Bermuda; Central America; South America; introduced Pacific Islands (Hawaii); New Zealand.

Carex longii is introduced in the Hawaiian Islands and New Zealand.

Several regional floras have incorrectly applied the name Carex albolutescens to C. longii (P. E. Rothrock 1991). In the southern part of the range, decumbent culms of C. longii can root at their nodes during the fall and produce flowering culms the following spring. A similar habit of vegetative spread is frequent in C. tribuloides, less common in C. albolutescens, C. ozarkana, and C.

projecta, and rare in C. cristatella, C. scoparia and C. vexans.

P. E. Rothrock et al. (1997) reported putative hybrids between Carex longii and C. straminea.

Related Objects Image Gallery Distribution Map Map Illustration Illustration Related Links (opens in a new window)

Treatments in Other Floras @ www.efloras.org Flora of Missouri Other Databases W3TROPICOS IPNI l eFlora Home l People Search l Help l ActKey l Hu Cards l Glossary l http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=2423572973/7/2007 11:05:37 AM

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