View source for Carex willdenowii

{{Treatment/ID
|accepted_name=Carex willdenowii
|accepted_authority=Schkuhr ex Willdenow
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=4(1): 211. 1805
|year=1805
}}
|common_names=Willdenow’s sedge
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Cyperaceae;Carex;Carex sect. Phyllostachyae;Carex willdenowii
|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. Phyllostachyae]]</div><div class="higher-taxon"><small>species</small>[[Carex willdenowii]]</div></div>
|volume=Volume 23
|mention_page=page 560
|treatment_page=page 559
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Culms </b>erect or spreading, (3.1–)8.2–29.7 cm, 0.4–0.9 of total plant height. <b>Leaves</b>: basal sheaths pale to medium brown; blades green, exceeding culms, 1.3–3.2 mm wide, herbaceous, margins green, smooth or slightly scabrous. <b>Lateral</b> spikes (0–)2–4, basal, on widely spreading to nodding peduncles. <b>Terminal</b> spike with staminate portion 3–29-flowered, 3.4–8.6(–10.3) × 0.7–1.4 mm; pistillate portion 3–9-flowered. <b>Pistillate</b> scales green, margins hyaline, white, often with reddish brown tinge, 1.6–2.22 mm wide, not more than 1.5 times as wide as and not concealing perigynia, apex attenuate into green awns; distal scales with hyaline margins 0.3–0.8 mm, apex acute, awnless. <b>Staminate</b> scales green or tinged with brown subapically, 1.4–2.8 × 1.8–2.2 mm, margins free but enfolding scales above, hyaline, white, apex obtuse, erose. <b>Anthers</b> 0.9–1.1 mm. <b>Perigynia</b> 3–9 per spike, pale green to olive or pale brown, unspeckled, narrowly ovoid to lance-ovoid, (4.5–)4.9–5.7(–6.5) × 1.2–1.7 mm, 1.2–2.2 times as long as wide, tightly enveloping achenes, apex gradually tapering; beak (1.7–)1.9–2.6(–2.8) mm, scabrous. <b>Stigmas</b> filiform, flexuous, long, slender, strongly papillose. <b>Achenes</b> brown, oblong, (1.8–)2.1–2.5(–2.6) × (1.2–)1.3–1.5(–1.6) mm. <b>2n</b> = 62, 78.</span><!--

-->{{Treatment/Body
|phenology=Fruiting spring–summer (late Apr–late Jul).
|habitat=Acidic, dry mesic, open, oak-dominated woodlands, often on ridges and slopes
|elevation=50–900 m
|distribution=Ont.;Ala.;Ark.;Conn.;Del.;D.C.;Ill.;Ind.;Ky.;Md.;Mass.;Mo.;N.J.;N.Y.;N.C.;Ohio;Pa.;S.C.;Tenn.;Vt.;Va.;W.Va.
|discussion=<p>The <i>Carex willdenowii</i> group (<i>C. willdenowii</i>, <i>C. basiantha</i> & <i>C. superata</i>) differs from the other members of the section in having asynchronous spike production, resulting in a protracted fruiting season (R. F. C. Naczi et al. 1998).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Carex willdenowii
|authority=Schkuhr ex Willdenow
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Cyperaceae
|phenology=Fruiting spring–summer (late Apr–late Jul).
|habitat=Acidic, dry mesic, open, oak-dominated woodlands, often on ridges and slopes
|elevation=50–900 m
|distribution=Ont.;Ala.;Ark.;Conn.;Del.;D.C.;Ill.;Ind.;Ky.;Md.;Mass.;Mo.;N.J.;N.Y.;N.C.;Ohio;Pa.;S.C.;Tenn.;Vt.;Va.;W.Va.
|reference=None
|publication title=Sp. Pl.
|publication year=1805
|special status=Illustrated;Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_1064.xml
|genus=Carex
|section=Carex sect. Phyllostachyae
|species=Carex willdenowii
}}<!--

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