View source for Carex atratiformis

{{Treatment/ID
|accepted_name=Carex atratiformis
|accepted_authority=Britton
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=22: 222. 1895
|year=1895
}}
|common_names=Carex atratiforme
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Carex ovata
|authority=Rudge
|rank=species
|publication_title=Trans. Linn. Soc. London
|publication_place=7: 96, plate 9, fig. 1. 1804,
}}
|synonyms={{Treatment/ID/Synonym
|name=Carex atrata subsp. atratiformis
|authority=(Britton) Kükenthal
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Carex atratiformis subsp. raymondii
|authority=(Calder) A. E. Porsild
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Carex raymondii
|authority=
|rank=species
}}
|hierarchy=Cyperaceae;Carex;Carex sect. Racemosae;Carex atratiformis
|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. Racemosae]]</div><div class="higher-taxon"><small>species</small>[[Carex atratiformis]]</div></div>
|volume=Volume 23
|mention_page=page 403, 405
|treatment_page=page 404
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>loosely cespitose. <b>Culms</b> 20–70 cm, distally finely scabrous. <b>Leaves</b> 2.5–5 mm wide. <b>Inflorescences</b>: proximal bracts shorter than or exceeding inflorescences; spikes distinct, spreading or the proximal pendent and often separate, elongate, 10–25 × 5–8 mm; lateral 3–6 spikes pistillate, long-pendunculate; terminal spike gynecandrous. <b>Pistillate</b> scales light to dark brown with hyaline margins, lanceolate, longer than and as broad as perigynia, midvein same color as body, inconspicuous or lighter in color, conspicuous, raised, prominent, sometimes short-mucronate. <b>Perigynia</b> ascending, yellow brown or chestnut, veinless, ovate or elliptic, 2.5–3 × 1.5–1.75 mm, apex abruptly beaked, distally papillose; beak 0.4–0.5 mm, bidentate, smooth. <b>Achenes</b> filling proximal 1/2 or less of perigynia.</span><!--

-->{{Treatment/Body
|phenology=Fruiting Jun–Aug.
|habitat=Forest margins, open woodlands, calcareous ledges, stream banks, lakeshores, wet cliffs, high elevation seeps
|elevation=10–1500 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Ont.;Que.;Sask.;Yukon;Alaska;Maine;Mich.;N.H.;N.Y.;Vt.
|discussion=<p><i>Carex</i> raymondii is a minor variant consisting of specimens with yellow-brown perigynia and light brown scales with midribs lighter in color than the bodies of the scales. The hybrid taxon <i>Carex</i> ×quirponensis Fernald (= <i>C. atratiformis</i> × <i>C. norvegica</i>) is known from Newfoundland and Quebec.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Carex atratiformis
|authority=Britton
|rank=species
|parent rank=section
|synonyms=Carex atrata subsp. atratiformis;Carex atratiformis subsp. raymondii;Carex raymondii
|basionyms=Carex ovata
|family=Cyperaceae
|phenology=Fruiting Jun–Aug.
|habitat=Forest margins, open woodlands, calcareous ledges, stream banks, lakeshores, wet cliffs, high elevation seeps
|elevation=10–1500 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Ont.;Que.;Sask.;Yukon;Alaska;Maine;Mich.;N.H.;N.Y.;Vt.
|reference=None
|publication title=Bull. Torrey Bot. Club
|publication year=1895
|special status=Illustrated;Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_723.xml
|genus=Carex
|section=Carex sect. Racemosae
|species=Carex atratiformis
}}<!--

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