View source for Juncus alpinoarticulatus

{{Treatment/ID
|accepted_name=Juncus alpinoarticulatus
|accepted_authority=Chaix
|publications={{Treatment/Publication
|title=in D. Villars, Hist. Pl. Dauphiné
|place=1: 378. 1786
|year=1786
}}
|common_names=Alpine rush
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Juncus alpinus
|authority=Villars
|rank=species
}} {{Treatment/ID/Synonym
|name=Juncus alpinoarticulatus subsp. americanus
|authority=(Farwell) Hämet—Ahti
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Juncus alpinoarticulatus subsp. fuscescens
|authority=(Fernald) Hämet—Ahti
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Juncus alpinus var. americanus
|authority=Farwell
|rank=variety
}} {{Treatment/ID/Synonym
|name=Juncus alpinus
|authority=Schultes
|rank=species
}} {{Treatment/ID/Synonym
|name=Juncus alpinus var. fuscescens
|authority=Fernald
|rank=variety
}} {{Treatment/ID/Synonym
|name=Juncus alpinus var. insignis
|authority=Fries ex Buchenau
|rank=variety
}} {{Treatment/ID/Synonym
|name=Juncus alpinus subsp. nodulosus
|authority=(Wahlenberg) Lindman
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Juncus alpinus var. rariflorus
|authority=(Hartman) Hartmann
|rank=variety
}} {{Treatment/ID/Synonym
|name=Juncus nodulosus
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Juncus rariflorus
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Juncus richardsonianus
|authority=
|rank=species
}}
|hierarchy=Juncaceae;Juncus;Juncus subg. Septati;Juncus alpinoarticulatus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Juncaceae]]</div><div class="higher-taxon"><small>genus</small>[[Juncus]]</div><div class="higher-taxon"><small>subgenus</small>[[Juncus subg. Septati]]</div><div class="higher-taxon"><small>species</small>[[Juncus alpinoarticulatus]]</div></div>
|volume=Volume 22
|mention_page=page 255
|treatment_page=page 254
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, rhizomatous, 0.5–5 dm. <b>Rhizomes</b> 2–4 mm diam., not swollen. <b>Culms</b> erect, terete, 1–3 mm diam., smooth. <b>Cataphylls</b> 0–1, straw-colored or maroon, apex acute. <b>Leaves</b>: basal 0–2, cauline 1–2(–5); auricles 0.5–1.2 mm, apex rounded, scarious; blade green to straw-colored, terete, 1.5–12 cm × 0.5–1.1 mm. <b>Inflorescences</b> terminal panicles of 5–25 heads, 3–11 cm, branches erect to ascending; primary bract erect; heads 2–10-flowered, obpyramidal, usually with some flowers short- pedicellateled, 2–6 mm in diam. <b>Flowers</b>: tepals greenish to straw-colored, lanceolate to oblong; outer tepals 1.8–3 mm, apex obtuse, mucronate; inner tepals 1.6–2.7 mm, apex obtuse; stamens 6, anthers 1/2 filament length. <b>Capsules</b> equaling perianth to usually exserted, chestnut brown to straw-colored, imperfectly 3-locular, oblong to oblong-ovoid, 2.3–3.5 mm, apex obtuse, valves separating at dehiscence. <b>Seeds</b> oblong to ovoid, 0.5–0.7 mm, not tailed. <b>2n</b> = 40.</span><!--

-->{{Treatment/Body
|phenology=Fruiting mid summer–fall.
|habitat=Wet meadows, sandy and gravelly, often calcareous shores, fens, and clayey pools over rock
|elevation=0–2600 m
|distribution=Greenland;;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.S.;N.W.T.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Colo.;Idaho;Ill.;Ind.;Iowa;Maine;Mich.;Minn.;Mo.;Mont.;Nebr.;N.Y.;N.Dak.;Ohio;Pa.;S.Dak.;Utah;Vt.;Wash.;Wis.;Eurasia.
|discussion=<p>Several attempts have been made to separate subspecies or varieties of this widespread and variable species. In one study, five varieties were recognized, with four in North America (B. Lindquist 1932) . In another, at least six subspecies were recognized with two in North America (L. H&auml;met-Ahti 1986). The variation we have encountered does not fit nicely into the subspecies H&auml;met-Ahti has recognized, and until a full account of the variation throughout the range of the species is presented, we are not recognizing subspecific or varietal divisions of this species. Recent evidence suggests that this species may be one of the parents of the tetraploid <i>Juncus articulatus</i>. <i>Juncus alpinoarticulatus</i> hybridizes with <i>J. brevicaudatus</i> (= J. × gracilescens J. Hermann), <i>J. articulatus</i> (= J. × alpiniformis Fernald), <i>J. nodosus</i> (= J. × nodosiformis Fernald), and <i>J. torreyi</i> (= J. ×stuckeyi Reinking).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Juncus alpinoarticulatus
|authority=Chaix
|rank=species
|parent rank=subgenus
|synonyms=Juncus alpinus;Juncus alpinoarticulatus subsp. americanus;Juncus alpinoarticulatus subsp. fuscescens;Juncus alpinus var. americanus;Juncus alpinus;Juncus alpinus var. fuscescens;Juncus alpinus var. insignis;Juncus alpinus subsp. nodulosus;Juncus alpinus var. rariflorus;Juncus nodulosus;Juncus rariflorus;Juncus richardsonianus
|basionyms=
|family=Juncaceae
|phenology=Fruiting mid summer–fall.
|habitat=Wet meadows, sandy and gravelly, often calcareous shores, fens, and clayey pools over rock
|elevation=0–2600 m
|distribution=Greenland;;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.S.;N.W.T.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Colo.;Idaho;Ill.;Ind.;Iowa;Maine;Mich.;Minn.;Mo.;Mont.;Nebr.;N.Y.;N.Dak.;Ohio;Pa.;S.Dak.;Utah;Vt.;Wash.;Wis.;Eurasia.
|reference=None
|publication title=in D. Villars, Hist. Pl. Dauphiné
|publication year=1786
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V22/V22_213.xml
|genus=Juncus
|subgenus=Juncus subg. Septati
|species=Juncus alpinoarticulatus
}}<!--

-->[[Category:Treatment]][[Category:Juncus subg. Septati]]