View source for Carex heleonastes

{{Treatment/ID
|accepted_name=Carex heleonastes
|accepted_authority=Linnaeus f.
|publications={{Treatment/Publication
|title=Suppl. Pl.,
|place=414. 1782
|year=1782
}}
|common_names=Carex des tourbières
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Carex carltonia
|authority=Dewey
|rank=species
}} {{Treatment/ID/Synonym
|name=Carex heleonastes subsp. neurochlaena
|authority=(T. Holm) Böcher
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Carex neurochlaena
|authority=
|rank=species
}}
|hierarchy=Cyperaceae;Carex;Carex sect. Glareosae;Carex heleonastes
|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. Glareosae]]</div><div class="higher-taxon"><small>species</small>[[Carex heleonastes]]</div></div>
|volume=Volume 23
|mention_page=page 312, 314
|treatment_page=page 316
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>loosely cespitose, in small clumps; rhizomes short. <b>Culms</b> erect, slender, 15–35 cm, rough distally. <b>Leaves</b>: sheaths pale brown abaxially, inner band hyaline, often red tinged, concave at summit; ligules wider than long; blades pale green or slightly gray-green, flat or slightly involute, 5–15 cm × 1–2 mm, shorter than culms. <b>Inflorescences</b> 0.8–2 cm × 5–10 mm; proximal bracts scalelike, occasionally bristlelike, shorter than spikes. <b>Spikes</b> 3–4(–6), lateral spikes gynecandrous, closely approximate or proximal spikes slightly separate, individually distinct, containing 5–10 perigynia, ovoid-globose, 4–7 × 5–10 mm; terminal spike not clavate. <b>Pistillate</b> scales red-brown with lighter center and broad white-hyaline margins, oblong-ovate, subequal to perigynia, apex obtuse. <b>Perigynia</b> appressed-ascending, green-white proximally and pale brown distally, often mid brown in mature perigynia, finely several-veined, elliptic-obovate, 2.5–3.5 × 1.2–1.5 mm, widest near middle, subcoriaceous; beak short, entire or with few marginal teeth. <b>Achenes</b> red-brown, broadly obovate, 1.5(–2) × 1–1.2 mm, dull to slightly glossy. <b>2n</b> = 56.</span><!--

-->{{Treatment/Body
|phenology=Fruiting Jun–Aug.
|habitat=Mires, damp meadows, lowlands
|elevation=0–1500 m
|distribution=Alta.;B.C.;Man.;Nfld. and Labr.;N.W.T.;Ont.;Que.;Sask.;Yukon;Alaska;Mich.;Eurasia.
|discussion=<p>The rather doubtful species <i>Carex</i> neurochlaena T. Holm, described from Rink Rapids in Yukon, was recognized as <i>C. heleonastes</i> subsp. neurochlaena. It is characterized by slightly smaller perigynia with a short, smooth beak and distinct veins; scales with distinct, in some cases, rather broad hyaline margins; and spikelets brownish. Very little material of <i>C. heleonastes</i>, in the broad sense, is available from northern Yukon and Alaska, and the distinction and distribution between <i>C. heleonastes</i> and C. neurochlaena remains obscure. Most specimens collected from Alaska and identified as C. neurochlaena belong to <i>C. marina</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Carex heleonastes
|authority=Linnaeus f.
|rank=species
|parent rank=section
|synonyms=Carex carltonia;Carex heleonastes subsp. neurochlaena;Carex neurochlaena
|basionyms=
|family=Cyperaceae
|phenology=Fruiting Jun–Aug.
|habitat=Mires, damp meadows, lowlands
|elevation=0–1500 m
|distribution=Alta.;B.C.;Man.;Nfld. and Labr.;N.W.T.;Ont.;Que.;Sask.;Yukon;Alaska;Mich.;Eurasia.
|reference=None
|publication title=Suppl. Pl.,
|publication year=1782
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V23/V23_554.xml
|genus=Carex
|section=Carex sect. Glareosae
|species=Carex heleonastes
}}<!--

-->[[Category:Treatment]][[Category:Carex sect. Glareosae]]