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Canadian Rush

Juncus canadensis Gay

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provided by eFloras
Two varieties and two forms occurring within the flora have been recognized (M. L. Fernald 1945b). Juncus canadensis var. sparsiflorus has stiffly erect inflorescence branches, and the flowers are generally longer than those of var. canadensis. These varieties simply serve to give name to parts of the broad morphologic range of variation encountered in J. canadensis and do not appear to represent any distinct biological entities.

Juncus canadensis and the following three species form a distinctive group: they have ve been variously treated as speecies (as here), varieties of J. canadensis, or as two species, J. canadensis and a polymorphic species, J. brachysephalus, encompassing the other three species (B. Boivin 1967--1979, part IV). Most of the species are easily recognized at their extremes but show a fair amount of overlap.

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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 22 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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Description

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Herbs, perennial, cespitose, 3--10 dm. Culms erect, 1--5 mm diam., smooth. Cataphylls 0 or 1--2, straw-colored, apex rounded. Leaves: basal 1, cauline 2--3; auricles 1--1.2 mm, apex rounded, scarious; blade terete, 7--22 cm x 1.2--3 mm. Inflorescences panicles or racemes of 3--50 heads, 2--20 cm, branches erect to ascending; primary bract erect; heads 5--50-flowered, obconic to spheric, 3--10 mm diam. Flowers: tepals green or straw-colored to reddish brown, lanceolate; outer tepals 2.7--3.8 mm, apex acuminate; inner tepals 2.9--4 mm, apex acuminate; stamens 3(--6), anthers 1/2 filament length. Capsules equaling perianth or exserted, chestnut brown, imperfectly 3-locular, lanceoloid, 3.3--4.5 mm, acute proximal to beak, valves separating at dehiscence. Seeds fusiform, 1.1--1.9 mm, tailed; body covered with whitish translucent veil. 2n = 80.
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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. 22 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

Distribution

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St. Pierre and Miquelon; Man., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., Oreg., P.E.I., Que.; Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., S.Dak., 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. 22 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 mid summer--fall.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 22 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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Salt, brackish, and calcareous marshes, acid bogs, roadsides, tidal flats, swamps, patterned fen, lake shores, beaches; 0--200m.
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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. 22 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

Synonym

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Juncus canadensis var. longicaudatus Engelmann; J. canadensis var. sparsiflorus Fernald; J. longicaudatus (Engelmann) Mackenzie; J. polycephalus Michaux var. paradoxus Torrey
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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. 22 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
original
visit source
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eFloras

Juncus canadensis

provided by wikipedia EN

Juncus canadensis, called the Canadian rush, is a species of flowering plant in the genus Juncus, native to central and eastern Canada and the central and eastern United States, and introduced to Oregon, New Zealand, and the Low Countries in Europe.[2] It is an obligate wetland species.[3]

References

  1. ^ Essai Monogr. Jonc.: 46 (1825)
  2. ^ a b "Juncus canadensis J.Gay ex Laharpe". Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. 2017. Retrieved 21 February 2021.
  3. ^ Flaherty, Kelley L.; Rentch, James S.; Anderson, James T. (2018). "Wetland seed dispersal by white-tailed deer in a large freshwater wetland complex". AoB Plants. 10 (1): plx074. doi:10.1093/aobpla/plx074. PMC 5777486. PMID 29383233.
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Juncus canadensis: Brief Summary

provided by wikipedia EN

Juncus canadensis, called the Canadian rush, is a species of flowering plant in the genus Juncus, native to central and eastern Canada and the central and eastern United States, and introduced to Oregon, New Zealand, and the Low Countries in Europe. It is an obligate wetland species.

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