View source for Carex senta

{{Treatment/ID
|accepted_name=Carex senta
|accepted_authority=Boott
|publications={{Treatment/Publication
|title=Ill. Carex,
|place=174. 1867
|year=1867
}}
|special_status={{Treatment/ID/Special_status
|code=W1
|label=
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms=
|hierarchy=Cyperaceae;Carex;Carex sect. Phacocystis;Carex senta
|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. Phacocystis]]</div><div class="higher-taxon"><small>species</small>[[Carex senta]]</div></div>
|volume=Volume 23
|mention_page=page 379, 381, 389
|treatment_page=page 390
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism growth form;whole_organism growth form"><b>Plants </b>not cespitose.</span> <span class="statement" id="st-d0_s1" data-properties="culm shape;culm some measurement;culm pubescence or relief"><b>Culms </b>acutely angled, 50–100 cm, scabrous.</span> <span class="statement" id="st-d0_s2" data-properties="basal sheath coloration"><b>Leaves:</b> basal sheaths redbrown;</span> <span class="statement" id="st-d0_s3" data-properties="sheath pubescence or relief;apex coloration;apex architecture;apex shape">sheaths of proximal leaves scabrous, fronts with redbrown spots, prominently ladder-fibrillose, apex U-shaped;</span> <span class="statement" id="st-d0_s4" data-properties="blade width">blades 4–8 mm wide.</span> <span class="statement" id="st-d0_s5" data-properties="proximal bract height or length or size;proximal bract width"><b>Inflorescences:</b> proximal bract shorter than inflorescence, 3–5 mm wide.</span> <span class="statement" id="st-d0_s6" data-properties=""><b>Spikes </b>erect;</span> <span class="statement" id="st-d0_s7" data-properties="">staminate 2–3;</span> <span class="statement" id="st-d0_s8" data-properties="spike orientation;spike architecture;spike quantity;spike architecture;spike quantity">pistillate 2–4;</span> <span class="statement" id="st-d0_s9" data-properties="spike architecture;spike length;spike width;base shape">proximal pistillate spike 3–7 cm × 3–5 mm, base cuneate.</span> <span class="statement" id="st-d0_s10" data-properties="scale architecture;scale coloration;scale height or length or size;apex shape;apex architecture"><b>Pistillate </b>scales dark redbrown to black, shorter than perigynia, apex obtuse, awnless.</span> <span class="statement" id="st-d0_s11" data-properties="perigynium orientation;perigynium coloration;perigynium architecture;perigynium shape;perigynium architecture;perigynium shape;perigynium shape;perigynium length;perigynium width;perigynium texture;perigynium reflectance;perigynium pubescence or relief;apical 1/2 coloration;apex shape;apex relief"><b>Perigynia </b>ascending, pale-brown with redbrown spots on apical 1/2, 3–7-veined on each face, somewhat flattened, loosely enclosing achenes, thick-walled, ellipsoid or ovoid, 3–3.5 × 2–2.2 mm, somewhat leathery, dull, often scabrous on apical margins, apex obtuse, papillose;</span> <span class="statement" id="st-d0_s12" data-properties="beak coloration;beak coloration;beak some measurement">beak pale-brown or redbrown, 0.2–0.3 mm.</span> <span class="statement" id="st-d0_s13" data-properties="achene size;achene reflectance"><b>Achenes </b>not constricted, dull.</span><!--

-->{{Treatment/Body
|phenology=Fruiting Jun.
|habitat=Wet meadows along streams or rivers
|elevation=0–3000 m
|distribution=Ariz.;Calif.;Mexico
|discussion=<p>Carex senta is a member of the C. stricta group and is most similar to C. angustata. These two species, which may be sympatric, can be distinguished by C. senta, which lacks prominent bladeless sheaths, larger leathery perigynia with 3–7 veins on each face, and larger achenes. Carex senta is distinguished from C. nudata by the flowering from second-year stems, by the wider inflorescence bract, the broader ellipsoid perigynia, and the red-brown (rather than black) scales. Variation within the species, as well as its relationships with other members of the C. stricta subgroup, merit investigation. Specimens of C. senta from Santa Cruz Island have obovoid, apically rounded perigynia with a 0.1 mm beak, and specimens from Arizona have papery perigynia. Collections from New Mexico identified as C. senta are C. stricta.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Carex senta
|authority=Boott
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Cyperaceae
|phenology=Fruiting Jun.
|habitat=Wet meadows along streams or rivers
|elevation=0–3000 m
|distribution=Ariz.;Calif.;Mexico
|reference=None
|publication title=Ill. Carex,
|publication year=1867
|special status=W1;Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V23/V23_692.xml
|genus=Carex
|section=Carex sect. Phacocystis
|species=Carex senta
|achene reflectance=dull
|achene size=not constricted
|apex architecture=awnless;ladder-fibrillose
|apex coloration=redbrown spots
|apex relief=papillose
|apex shape=obtuse;obtuse;u--shaped
|apical 1/2 coloration=redbrown spots
|basal sheath coloration=redbrown
|base shape=cuneate
|beak coloration=redbrown;pale-brown
|beak some measurement=0.2mm;0.3mm
|blade width=4mm;8mm
|culm pubescence or relief=scabrous
|culm shape=angled
|culm some measurement=50cm;100cm
|perigynium architecture=thick-walled;3-7-veined
|perigynium coloration=pale-brown
|perigynium length=3mm;3.5mm
|perigynium orientation=ascending
|perigynium pubescence or relief=scabrous
|perigynium reflectance=dull
|perigynium shape=ovoid;ellipsoid;flattened
|perigynium texture=leathery
|perigynium width=2mm;2.2mm
|proximal bract height or length or size=shorter
|proximal bract width=3mm;5mm
|scale architecture=pistillate
|scale coloration=dark redbrown;black
|scale height or length or size=shorter
|sheath pubescence or relief=scabrous
|spike architecture=pistillate;pistillate;staminate
|spike length=3cm;7cm
|spike orientation=erect
|spike quantity=2;4
|spike width=3mm;5mm
|whole_organism growth form=plant;not cespitose
}}<!--

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