View source for Carex aquatilis

{{Treatment/ID
|accepted_name=Carex aquatilis
|accepted_authority=Wahlenberg
|publications={{Treatment/Publication
|title=Kongl. Vetensk. Acad. Nya Handl.
|place=24: 165. 1803
|year=1803
}}
|special_status={{Treatment/ID/Special_status
|code=W2
|label=
}}{{Treatment/ID/Special_status
|code=W1
|label=
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms=
|hierarchy=Cyperaceae;Carex;Carex sect. Phacocystis;Carex aquatilis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Carex]]</div><div class="higher-taxon"><small>section</small>[[Carex sect. Phacocystis]]</div><div class="higher-taxon"><small>species</small>[[Carex aquatilis]]</div></div>
|volume=Volume 23
|mention_page=page 380, 382, 383, 384, 385, 388, 389, 390, 394, 395
|treatment_page=page 397
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>not cespitose. <b>Culms</b> 20–150 cm. <b>Leaves</b>: basal sheaths red-brown or brown; sheaths of proximal leaves glabrous, fronts with indistinct spots, veinless, apex U-shaped; blades usually amphi-stomic, papillose on both surfaces. <b>Inflorescences</b>: proximal bract longer than inflorescence. <b>Spikes</b>: erect; proximal 2–6 spikes pistillate; terminal (1–)2–4 spikes staminate. <b>Pistillate</b> scales red-brown to purple-brown, apex obtuse or acute, awnless. <b>Perigynia</b> ascending, veinless, somewhat flattened, loosely enclosing achenes, ellipsoid or obovoid, dull, apex obtuse or acute, papillose. <b>Achenes</b> not constricted, glossy. <b>2n</b> = 72–80.</span><!--

-->{{Treatment/Body
|distribution=Alta.;B.C.;Man.;N.B.;N.S.;N.W.T.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Conn.;Idaho;Ill.;Ind.;Iowa;Kans.;Maine;Mass.;Mich.;Minn.;Mo.;Mont.;N.Dak.;N.J.;N.Mex.;N.Y.;Nebr.;Nev.;Ohio;Oreg.;Pa.;S.Dak.;Utah;Va.;Vt.;Wash.;Wis.;Wyo.;Europe.
|discussion=<p>Varieties 4 (4 in the flora).</p><!--
--><p><i>Carex aquatilis</i> is circumboreal and variable; four extensively intergrading varieties are recognized in North America. The species is distinguished by amphistomic (epistomic in <i></i>var.<i> dives</i>) papillose leaves, glabrous sheaths with a concave apex, perigynia that lack veins and are usually brown-spotted on the proximal half, and have glossy achenes.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Spikes pendent or the terminal erect; proximal peduncle to 11 cm; perigynia ellipsoid; beak purple-brown, 0.3–0.4 mm; culms scabrous on angles.
|[[Carex aquatilis var. dives|Carex aquatilis var. dives]]
|-id=key-0-1
|1
|Spikes erect; proximal peduncle not more than 4 cm; perigynia usually obovoid; beak pale or purple-brown, not more than 0.2 mm; culms glabrous or scabrous on angles.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Pistillate scales pale brown with narrow red-brown margins and broad pale midvein.
|[[Carex aquatilis var. substricta|Carex aquatilis var. substricta]]
|-id=key-0-2
|2
|Pistillate scales red- or purple-brown and narrow pale midvein.
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Perigynia pale brown; staminate spikes usually 2–4.
|[[Carex aquatilis var. aquatilis|Carex aquatilis var. aquatilis]]
|-id=key-0-3
|3
|Perigynia purple-brown on apical 1/2; staminate spikes usually 1–2.
|[[Carex aquatilis var. minor|Carex aquatilis var. minor]]
|}
</div></div><!--

-->{{#Taxon:
name=Carex aquatilis
|authority=Wahlenberg
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Cyperaceae
|distribution=Alta.;B.C.;Man.;N.B.;N.S.;N.W.T.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Conn.;Idaho;Ill.;Ind.;Iowa;Kans.;Maine;Mass.;Mich.;Minn.;Mo.;Mont.;N.Dak.;N.J.;N.Mex.;N.Y.;Nebr.;Nev.;Ohio;Oreg.;Pa.;S.Dak.;Utah;Va.;Vt.;Wash.;Wis.;Wyo.;Europe.
|reference=None
|publication title=Kongl. Vetensk. Acad. Nya Handl.
|publication year=1803
|special status=W2;W1;Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V23/V23_709.xml
|genus=Carex
|section=Carex sect. Phacocystis
|species=Carex aquatilis
}}<!--

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[[Category:Treatment]]
[[Category:Carex sect. Phacocystis]]
[[Category:Revision Pending]]