View source for Carex athrostachya

{{Treatment/ID
|accepted_name=Carex athrostachya
|accepted_authority=Olney
|publications={{Treatment/Publication
|title=Proc. Amer. Acad. Arts
|place=7: 393. 1868
|year=1868
}}
|basionyms=
|synonyms=
|hierarchy=Cyperaceae;Carex;Carex sect. Ovales;Carex athrostachya
|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. Ovales]]</div><div class="higher-taxon"><small>species</small>[[Carex athrostachya]]</div></div>
|volume=Volume 23
|mention_page=page 332, 334, 340
|treatment_page=page 347
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>densely cespitose. <b>Culms</b> (5–)20–80 cm. <b>Leaves</b>: sheath summits usually U-shaped, sometimes prolonged to 2.5(–4) mm beyond collar; distal ligules 1–3(–5) mm; blades 3–4(–5) per fertile culm, 10–20 cm × (1.5–)2–3(–5) mm. <b>Inflorescences</b> erect, dense, headlike, green to brown, (0.8–)1.5–2.2 cm × 7–20 mm; proximal internode 1.5–5 mm; 2d internode 1–3.5 mm; proximal 2–3 bracts leaflike, ascending to spreading, much longer than inflorescences, usually less than 1.8 mm wide, bases ± surrounding culms. <b>Spikes</b> (5–)7–10(–14), individually distinct or indistinct, broadly ovoid to ovoid, (4.5–)7–10 × 4.5–7(–9) mm, base and apex truncate to acute. <b>Pistillate</b> scales gold to brown, with whitish, green, or tan midstripe, lanceolate to ovate, 2.4–4.3 mm, shorter, narrower than perigynia, margin sometimes white, 0.25 mm wide, apex acuminate to awned. <b>Perigynia</b> ascending to ascending-spreading, cream colored to light brown, conspicuously 0–9-veined abaxially, conspicuously 0–8-veined adaxially, ovate to lanceolate, plano-convex or flat, (2.8–)3.5–4(–4.8) × (0.8–)1–1.5(–1.8) mm, 0.35–0.45 mm thick, margin flat, including wing (0.1–)0.2(–0.5) mm wide, wing ciliate-serrulate on distal body; beak gold to red-brown at tip, cylindric, unwinged, abaxial suture usually with conspicuous white margin, distance from beak tip to achene 1.9–2.5 mm, entire for at least 0.4–0.9 mm. <b>Achenes</b> sessile or shortly stipitate, ovate to obovate, (1–)1.2–1.6 × 0.7–1 mm, 0.3–0.4 mm thick. <b>2n</b> = 68.</span><!--

-->{{Treatment/Body
|phenology=Fruiting late spring–summer.
|habitat=Seasonally moist meadows, marshes, pond and lake margins
|elevation=100–4000 m
|distribution=Alta.;B.C.;Man.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Dak.;Oreg.;S.Dak.;Tex.;Utah;Wash.;Wyo.;Mexico (n Baja California).
|discussion=<p><i>Carex athrostachya</i> intergrades with <i>C. unilateralis</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Carex athrostachya
|author=
|authority=Olney
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Cyperaceae
|phenology=Fruiting late spring–summer.
|habitat=Seasonally moist meadows, marshes, pond and lake margins
|elevation=100–4000 m
|distribution=Alta.;B.C.;Man.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Dak.;Oreg.;S.Dak.;Tex.;Utah;Wash.;Wyo.;Mexico (n Baja California).
|reference=None
|publication title=Proc. Amer. Acad. Arts
|publication year=1868
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V23/V23_597.xml
|genus=Carex
|section=Carex sect. Ovales
|species=Carex athrostachya
}}<!--

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