View source for Carex davisii

{{Treatment/ID
|accepted_name=Carex davisii
|accepted_authority=Schweinitz & Torrey
|publications={{Treatment/Publication
|title=Ann. Lyceum Nat. Hist. New York
|place=1: 326. 1825
|year=1825
}}
|common_names=Davis’ 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. Hymenochlaenae;Carex davisii
|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. Hymenochlaenae]]</div><div class="higher-taxon"><small>species</small>[[Carex davisii]]</div></div>
|volume=Volume 23
|mention_page=page 463, 465, 542
|treatment_page=page 464
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>densely cespitose. <b>Culms</b> dark maroon at base; flowering stems 30–100 cm, as long as leaves at maturity or a little shorter, 1.5–3 mm thick, glabrous or pubescent on angles. <b>Leaves</b>: basal sheaths maroon, bladeless, sheaths pubescent or rarely glabrous; others grading from maroon to green on back, light brown-hyaline on front, red dotted and usually pubescent distally, prolonged at apex; blades flat, 3–8 mm wide, usually pubescent on abaxial surface at least near sheath, minutely scabrous on margins. <b>Inflorescences</b>: peduncles of proximal spikes slender, 10–25 mm, pubescent; peduncle of terminal spike 10–30 mm, pubescent; proximal bracts equaling or often exceeding inflorescences; sheaths 15–45 mm; blades 2–6 mm wide. <b>Lateral</b> spikes 2–4, 1 per node, well separated or distal 2 usually overlapping terminal spike, mostly erect when young but at least proximal spikes nodding at maturity, pistillate with 10–40 perigynia attached 1 mm apart distally and to 4 mm apart proximally, cylindric, 10–50 × 3.5–6 mm. <b>Terminal</b> spike gynecandrous, sessile or pedunculate, 15–35 × 2–6 mm. <b>Pistillate</b> scales pale hyaline with broad green midrib, elliptic or ovate-lanceolate, body shorter than mature perigynia but extending into pubescent green awn 2.5–3 mm, often short-ciliate near apex. <b>Perigynia</b> green to olive-green, often red dotted, 2-ribbed with 9–12 almost equally prominent, evenly spaced veins extending from base to apex, slightly inflated around achene, ellipsoid-ovoid, 4.5–6 × 2–2.5 mm, membranous, base rounded, apex narrowing abruptly to minute beak, glabrous; beak bidentate, less than 0.5 mm. <b>Achenes</b> distinctly stipitate, 2.2–2.7 × 1–1.2 mm, stipe 1 mm.</span><!--

-->{{Treatment/Body
|phenology=Fruiting late spring–mid summer.
|habitat=Floodplain forests, rich deciduous forests and forest margins, usually along streams or in ditches, wooded ravine slopes, meadows, fields and thickets, often associated with calcareous soils
|distribution=Ont.;Ark.;Conn.;Del.;Ill.;Ind.;Iowa;Kans.;Ky.;Md.;Mass.;Mich.;Minn.;Mo.;Nebr.;N.J.;N.Y.;Ohio;Okla.;Pa.;Tenn.;Tex.;Vt.;W.Va.;Wis.
|discussion=<p>Glabrous forms are sporadic in the western part of the range and were recognized as <i>Carex davisii</i> forma glabrescens by G. Kükenthal (1909) but do not warrant taxonomic recognition. A single collection of a putative sterile hybrid between <i>C. davisii</i> and <i>C. hirsutella</i> has been reported from Missouri (G. Yatskievych 1999+) but needs further study to confirm the parentage.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Carex davisii
|authority=Schweinitz & Torrey
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Cyperaceae
|phenology=Fruiting late spring–mid summer.
|habitat=Floodplain forests, rich deciduous forests and forest margins, usually along streams or in ditches, wooded ravine slopes, meadows, fields and thickets, often associated with calcareous soils
|distribution=Ont.;Ark.;Conn.;Del.;Ill.;Ind.;Iowa;Kans.;Ky.;Md.;Mass.;Mich.;Minn.;Mo.;Nebr.;N.J.;N.Y.;Ohio;Okla.;Pa.;Tenn.;Tex.;Vt.;W.Va.;Wis.
|reference=None
|publication title=Ann. Lyceum Nat. Hist. New York
|publication year=1825
|special status=Illustrated;Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_850.xml
|genus=Carex
|section=Carex sect. Hymenochlaenae
|species=Carex davisii
}}<!--

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