View source for Carex brunnescens

{{Treatment/ID
|accepted_name=Carex brunnescens
|accepted_authority=(Persoon) Poiret in J. Lamarck et al.
|publications={{Treatment/Publication
|title=in J. Lamarck et al., Encycl., Suppl.
|place=3: 286. 1813
|year=1813
}}
|basionyms={{Treatment/ID/Synonym
|name=Carex curta var. brunnescens
|authority=Persoon
}}
|synonyms={{Treatment/ID/Synonym
|name=Carex canescens var. brunnescens
|authority=(Persoon) W. D. J. Koch
}} {{Treatment/ID/Synonym
|name=Carex canescens subsp. brunnescens
|authority=(Persoon) Ascherson & Graebner
}}
|hierarchy=Cyperaceae;Carex;Carex sect. Glareosae;Carex brunnescens
|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 brunnescens]]</div></div>
|volume=Volume 23
|mention_page=page 320
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>densely cespitose, in small clumps; rhizomes short. <b>Culms</b> erect to arching, slender, 15–90 cm. <b>Leaves</b>: sheaths relatively tight, pale to mid brown abaxially, inner band thin and hyaline, often concave at summit; ligules as long as wide; blades green to yellowish green, flat, 10–25(–40) cm × 0.5–2 mm, shorter than culms. <b>Inflorescences</b> erect to somewhat nodding, 1.5–7 cm × 3–6 mm; proximal bracts bristlelike-prolonged, shorter than to exceeding spikes; distal bracts usually scalelike. <b>Spikes</b> 5–10, gynecandrous, proximal ± separate, distal closely approximate, containing 5–10 perigynia, sessile, globose to short-oblong, 3–7 × 3–4 mm; terminal spike staminate for less than 1/2 of length, scarcely clavate. <b>Pistillate</b> scales white-hyaline with green, 3-veined center, often brown tinged, ovate, subequal to, not concealing perigynia, apex obtuse to acute. <b>Perigynia</b> appressed-ascending to loosely spreading at maturity, green or brown, often dark brown in age, lightly several-veined, elliptic-ovate, 2–2.5 × 0.8–1.5 mm, widest near middle, membranous; beak shor, margin serrulate. <b>Achenes</b> pale to mid brown, ovate-orbiculate, 1.25–1.5 × 0.8–1 mm, glossy. <b>2n</b> = 56.</span><!--

-->{{Treatment/Body
|distribution=North America;Eurasia.
|discussion=<p>Subspecies 2 (2 in the flora).</p><!--
--><p><i>Carex brunnescens</i> is variable across its wide distribution; it deserves a monographic treatment. Many taxa have been described. Most variation is presumably of ecophenotypic nature; when growing in shady habitats the species is slender and weak and the scales are not or but little colored; in more exposed sites it is stiffer, and the scales become strongly brownish tinged. Only two subspecies are recognized here. Subspecies alaskana and <i></i>subsp.<i> pacifica</i> (see A. Kalela 1965) seem to grade to the typical subsp. brunnescens. A short-leaved plant with short and red tinged perigynia from western United States (Colorado, Montana, Utah, Wyoming) may represent a southern subspecies and should be studied in greater detail.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Culms usually erect or, sometimes, nodding; leaves (1–)1.5–2.5 mm wide; terminal spike ellipsoid to subclavate.
|[[Carex brunnescens subsp. brunnescens|Carex brunnescens subsp. brunnescens]]
|-id=key-0-1
|1
|Culms ascending to arching; leaves (0.5–)1–1.5 mm wide; terminal spike often clavate.
|[[Carex brunnescens subsp. sphaerostachya|Carex brunnescens subsp. sphaerostachya]]
|}
</div></div><!--

-->{{#Taxon:
name=Carex brunnescens
|author=
|authority=(Persoon) Poiret in J. Lamarck et al.
|rank=species
|parent rank=section
|synonyms=Carex canescens var. brunnescens;Carex canescens subsp. brunnescens
|basionyms=Carex curta var. brunnescens
|family=Cyperaceae
|distribution=North America;Eurasia.
|reference=None
|publication title=in J. Lamarck et al., Encycl., Suppl.
|publication year=1813
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V23/V23_564.xml
|genus=Carex
|section=Carex sect. Glareosae
|species=Carex brunnescens
}}<!--

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