View source for Carex sect. Porocystis

{{Treatment/ID
|accepted_name=Carex sect. Porocystis
|accepted_authority=Dumortier
|publications={{Treatment/Publication
|title=Fl. Belg.,
|place=147. 1827
|year=1827
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Carex sect. Virescentes
|authority=(Kunth) Mackenzie
|rank=section
}}
|hierarchy=Cyperaceae;Carex;Carex sect. Porocystis
|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. Porocystis]]</div></div>
|volume=Volume 23
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism growth form;whole_organism architecture;whole_organism growth form"><b>Plants </b>cespitose, short-rhizomatous.</span> <span class="statement" id="st-d0_s1" data-properties="culm coloration;culm pubescence or relief"><b>Culms </b>redbrown at base, rough distally.</span> <span class="statement" id="st-d0_s2" data-properties="basal sheath texture"><b>Leaves:</b> basal sheaths fibrous;</span> <span class="statement" id="st-d0_s3" data-properties="sheath front texture">sheath fronts membranous;</span> <span class="statement" id="st-d0_s4" data-properties="blade shape;cross-section width;cross-section pubescence">blades V-shaped in cross-section when young, not more than 8 mm wide, usually pubescent, at least at junction of blade and sheath, sometimes very sparsely.</span> <span class="statement" id="st-d0_s5" data-properties="inflorescence arrangement;spike quantity"><b>Inflorescences </b>racemose, spikes 2–6;</span> <span class="statement" id="st-d0_s6" data-properties="proximal nonbasal bract shape;proximal nonbasal bract architecture or shape;proximal nonbasal bract architecture">proximal nonbasal bracts filiform or leaflike, sheathless;</span> <span class="statement" id="st-d0_s7" data-properties="lateral spike architecture;lateral spike architecture;lateral spike architecture;perigynium quantity;perigynium quantity">lateral spikes pistillate, with not more than 40 (–50) perigynia, pedunculate, prophyllate;</span> <span class="statement" id="st-d0_s8" data-properties="terminal spike reproduction;terminal spike architecture">terminal spike gynecandrous or staminate.</span> <span class="statement" id="st-d0_s9" data-properties="proximal scale architecture;proximal scale pubescence;apex shape;margin architecture or pubescence or shape"><b>Proximal </b>pistillate scales with apex obtuse to acuminate or awned, glabrous, sometimes margins ciliate.</span> <span class="statement" id="st-d0_s10" data-properties="perigynium orientation;abaxial face architecture;adaxial face architecture;adaxial face architecture;adaxial face architecture;adaxial face shape;adaxial face shape;adaxial face shape;adaxial face some measurement;marginal vein quantity;marginal vein fragility;base shape;base shape;apex shape;apex shape;apex architecture;apex architecture;apex architecture or shape;apex pubescence;apex pubescence"><b>Perigynia </b>spreading, abaxial face veined, adaxial face veined or veinless, with 2, strong, marginal veins, sometimes stipitate, sometimes inflated, elliptic to broadly obovate, rounded-trigonous to round in cross-section, 1.7–4 mm, base rounded or tapering, apex rounded or tapering, beakless or, rarely, beaked, glabrous or pubescent;</span> <span class="statement" id="st-d0_s11" data-properties="beak atypical some measurement;beak some measurement;orifice shape;orifice shape">beak 0.2–0.5 (–1) mm, orifice entire or subentire.</span> <span class="statement" id="st-d0_s12" data-properties="stigma quantity"><b>Stigmas </b>3.</span> <span class="statement" id="st-d0_s13" data-properties="achene shape"><b>Achenes </b>trigonous, almost as large as bodies of perigynia;</span> <span class="statement" id="st-d0_s14" data-properties="style duration">style deciduous.</span><!--

-->{{Treatment/Body
|distribution=Temperate regions of the Northern Hemisphere;Central America;and South America
|discussion=<p>Species 10 (8 in the flora).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Terminal spike staminate or, rarely, gynecandrous, then not more than 1/4 of flowers pistillate.
|[[#key-0-2| > 2]]
|-id=key-0-1
|1
|Terminal spike gynecandrous, at least 1/3 of flowers pistillate.
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Perigynia 1–1.5 mm wide; beak absent; pistillate scales ovate, 2 times as long as wide.
|[[Carex pallescens|Carex pallescens]]
|-id=key-0-2
|2
|Perigynia 1.5–2.2 mm wide; beak 0.2–0.5(–1) mm; pistillate scales ovate-circular, not more than 1.5 times as long as wide.
|[[Carex torreyi|Carex torreyi]]
|-id=key-0-3
|3
|Perigynia densely pilose; widest lateral spikes 2–4 mm wide; ligules longer than wide.
|[[#key-0-4| > 4]]
|-id=key-0-3
|3
|Perigynia usually glabrous or pubescent, sometimes sparsely pilose; widest lateral spikes (3.5–)4–11 mm wide; ligules usually not longer than wide.
|[[#key-0-5| > 5]]
|-id=key-0-4
|4
|Terminal spike (5–)11–20 mm; anthers 0.7–1.3(–1.6) mm.
|[[Carex swanii|Carex swanii]]
|-id=key-0-4
|4
|Terminal spike 20–35(–40) mm; anthers (1–)1.6–2(–2.8) mm.
|[[Carex virescens|Carex virescens]]
|-id=key-0-5
|5
|Pistillate scales awned to 0.5–2 mm; perigynia papillose, pubescent.
|[[Carex bushii|Carex bushii]]
|-id=key-0-5
|5
|Pistillate scales awnless or awned to 0.5(–1) mm; perigynia not papillose, glabrous or sparsely pilose.
|[[#key-0-6| > 6]]
|-id=key-0-6
|6
|Mature perigynia nearly circular in cross section, spreading.
|[[Carex caroliniana|Carex caroliniana]]
|-id=key-0-6
|6
|Mature perigynia ± trigonous in cross section, ascending.
|[[#key-0-7| > 7]]
|-id=key-0-7
|7
|Leaf blades pilose on both surfaces.
|[[Carex hirsutella|Carex hirsutella]]
|-id=key-0-7
|7
|Leaf blades glabrescent, at least abaxially, sometimes persistently pilose proximally.
|[[Carex complanata|Carex complanata]]
|}
</div></div><!--

-->{{#Taxon:
name=Carex sect. Porocystis
|author=Peter W. Ball
|authority=Dumortier
|rank=section
|parent rank=genus
|synonyms=Carex sect. Virescentes
|basionyms=
|family=Cyperaceae
|distribution=Temperate regions of the Northern Hemisphere;Central America;and South America
|reference=None
|publication title=Fl. Belg.,
|publication year=1827
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V23/V23_888.xml
|genus=Carex
|section=Carex sect. Porocystis
|abaxial face architecture=veined
|achene shape=trigonous
|adaxial face architecture=stipitate;veinless;veined
|adaxial face shape=elliptic;broadly obovate rounded-trigonous
|adaxial face some measurement=1.7mm;4mm
|apex architecture=,;beakless
|apex architecture or shape=beaked
|apex pubescence=pubescent;glabrous
|apex shape=tapering;rounded;obtuse;acuminate or awned
|basal sheath texture=fibrous
|base shape=tapering;rounded
|beak atypical some measurement=0.5mm;1mm
|beak some measurement=0.2mm;0.5mm
|blade shape=v--shaped
|cross-section pubescence=pubescent
|culm coloration=redbrown
|culm pubescence or relief=rough
|inflorescence arrangement=racemose
|lateral spike architecture=prophyllate;pedunculate;pistillate
|margin architecture or pubescence or shape=ciliate
|marginal vein fragility=strong
|marginal vein quantity=2
|orifice shape=subentire;entire
|perigynium orientation=spreading
|perigynium quantity=not 50];not undefined
|proximal nonbasal bract architecture=sheathless
|proximal nonbasal bract architecture or shape=leaflike
|proximal nonbasal bract shape=filiform
|proximal scale architecture=pistillate
|proximal scale pubescence=glabrous
|sheath front texture=membranous
|spike quantity=2;6
|stigma quantity=3
|style duration=deciduous
|terminal spike architecture=staminate
|terminal spike reproduction=gynecandrous
|whole_organism architecture=short-rhizomatous
|whole_organism growth form=plant;cespitose
}}<!--

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