View source for Rhynchospora cephalantha

{{Treatment/ID
|accepted_name=Rhynchospora cephalantha
|accepted_authority=A. Gray
|publications={{Treatment/Publication
|title=Ann. Lyceum Nat. Hist. New York
|place=3: 218. 1835
|year=1835
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Rhynchospora cephalantha var. attenuata
|authority=Gale
|rank=variety
}} {{Treatment/ID/Synonym
|name=Rhynchospora cephalantha var. pleiocephala
|authority=Fernald & Gale
|rank=variety
}}
|hierarchy=Cyperaceae;Rhynchospora;Rhynchospora cephalantha
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Rhynchospora]]</div><div class="higher-taxon"><small>species</small>[[Rhynchospora cephalantha]]</div></div>
|volume=Volume 23
|mention_page=page 202, 213
|treatment_page=page 212
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism duration;whole_organism growth form;whole_organism atypical some measurement;whole_organism some measurement;whole_organism growth form"><b>Plants </b>perennial, cespitose, 40–100 (–150) cm;</span> <span class="statement" id="st-d0_s1" data-properties="rhizome presence">rhizomes absent.</span> <span class="statement" id="st-d0_s2" data-properties="culm orientation;culm architecture;culm shape;culm architecture;culm size;culm fragility"><b>Culms </b>arching, leafy, obscurely and convexly trigonous, multiribbed, slender to stoutish.</span> <span class="statement" id="st-d0_s3" data-properties=""><b>Principal </b>leaves overtopped by culm;</span> <span class="statement" id="st-d0_s4" data-properties="blade arrangement or course or shape;blade prominence or shape;blade width;apex shape;apex shape">blades linear, flat proximally, 1.5–3 mm wide, apex tapering, trigonous.</span> <span class="statement" id="st-d0_s5" data-properties="spikelet arrangement;spikelet quantity;spikelet arrangement;spikelet arrangement;spikelet shape;spikelet shape;spikelet thickness"><b>Inflorescences:</b> spikelet clusters 3–several, widely spaced, often equidistant, mostly hemispheric to globose, occasionally lobed, 1–2 cm thick;</span> <span class="statement" id="st-d0_s6" data-properties="">bracteal leaves much exceeding subtended inflorescence.</span> <span class="statement" id="st-d0_s7" data-properties="spikelet coloration;spikelet shape;spikelet atypical some measurement;spikelet some measurement;apex shape"><b>Spikelets </b>dark redbrown to dark-brown, lanceellipsoid to ellipsoid, 4–5 (–6) mm, apex acute;</span> <span class="statement" id="st-d0_s8" data-properties="scale reproduction;scale arrangement or shape;scale atypical some measurement;scale some measurement;apex shape;midrib quantity;lateral prominence">fertile scales elliptic, 3–3.5 (–4.5) mm, apex acute, midribs 3, laterals indistinct.</span> <span class="statement" id="st-d0_s9" data-properties="perianth bristle quantity;perianth bristle architecture"><b>Flowers:</b> perianth bristles 6, reaching tubercle tip, retrorsely (rarely antrorsely) barbellate.</span> <span class="statement" id="st-d0_s10" data-properties="fruit atypical quantity;fruit quantity;fruit atypical some measurement;fruit some measurement"><b>Fruits </b>1 (–2) per spikelet, 3.5–4 (–4.2) mm;</span> <span class="statement" id="st-d0_s11" data-properties="body coloration;body shape;body position or shape;body shape;body length;body atypical width;body width;center coloration">body brown with pale center, obovoid distal to stipe, lenticular, 2–2.3 × 1–1.5 (–2) mm;</span> <span class="statement" id="st-d0_s12" data-properties="tubercle atypical some measurement;tubercle some measurement;tubercle width">tubercle triangularsubulate, (1–) 1.5–2 mm, at least 0.5 mm wide at base.</span><!--

-->{{Treatment/Body
|phenology=Fruiting summer–fall.
|habitat=Sandy silts, sands, and peats of shores, boggy streams, seeps, savannas, and savanna bogs
|elevation=0–200 m
|distribution=Ala.;Del.;Fla.;Ga.;La.;Md.;Miss.;N.J.;N.Y.;N.C.;S.C.;Tex.;Va.
|discussion=<p>North American plants referred to Rhynchospora axillaris (Lamarck) Britton [Phaeocephala axillare (Lamarck) House by N. L. Britton and A. Brown (1913) and J. K. Small (1933)] are actually R. cephalantha. A photograph of the type specimen of Schoenus axillaris Lamarck (from P) reveals what appears to be an immature top of S. glomeratus [R. glomerata (Linnaeus) Vahl].</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Rhynchospora cephalantha
|authority=A. Gray
|rank=species
|parent rank=genus
|synonyms=Rhynchospora cephalantha var. attenuata;Rhynchospora cephalantha var. pleiocephala
|basionyms=
|family=Cyperaceae
|phenology=Fruiting summer–fall.
|habitat=Sandy silts, sands, and peats of shores, boggy streams, seeps, savannas, and savanna bogs
|elevation=0–200 m
|distribution=Ala.;Del.;Fla.;Ga.;La.;Md.;Miss.;N.J.;N.Y.;N.C.;S.C.;Tex.;Va.
|reference=None
|publication title=Ann. Lyceum Nat. Hist. New York
|publication year=1835
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V23/V23_365.xml
|genus=Rhynchospora
|species=Rhynchospora cephalantha
|apex shape=acute;acute;trigonous;tapering
|blade arrangement or course or shape=linear
|blade prominence or shape=flat
|blade width=1.5mm;3mm
|body atypical width=1.5mm;2mm
|body coloration=brown
|body length=2mm;2.3mm
|body position or shape=distal
|body shape=lenticular;obovoid
|body width=1mm;1.5mm
|center coloration=pale
|culm architecture=multiribbed;leafy
|culm fragility=stoutish
|culm orientation=arching
|culm shape=trigonous
|culm size=slender
|fruit atypical quantity=1;2
|fruit atypical some measurement=4mm;4.2mm
|fruit quantity=1
|fruit some measurement=3.5mm;4mm
|lateral prominence=indistinct
|midrib quantity=3
|perianth bristle architecture=barbellate
|perianth bristle quantity=6
|rhizome presence=absent
|scale arrangement or shape=elliptic
|scale atypical some measurement=3.5mm;4.5mm
|scale reproduction=fertile
|scale some measurement=3mm;3.5mm
|spikelet arrangement=equidistant;spaced;cluster
|spikelet atypical some measurement=5mm;6mm
|spikelet coloration=dark redbrown;dark-brown
|spikelet quantity=3;several
|spikelet shape=ellipsoid;lobed;mostly hemispheric;globose
|spikelet some measurement=4mm;5mm
|spikelet thickness=1cm;2cm
|tubercle atypical some measurement=1mm;1.5mm
|tubercle some measurement=1.5mm;2mm
|tubercle width=0.5
|whole_organism atypical some measurement=100cm;150cm
|whole_organism duration=perennial
|whole_organism growth form=plant;cespitose
|whole_organism some measurement=40cm;100cm
}}<!--

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