View source for Isolepis

{{Treatment/ID
|accepted_name=Isolepis
|accepted_authority=R. Brown
|publications={{Treatment/Publication
|title=Prodr.,
|place=221. 1810
|year=1810
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Scirpus sect. Isolepis
|authority=(R. Brown) Grisebach
|rank=section
}}
|hierarchy=Cyperaceae;Isolepis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Isolepis]]</div></div>
|etymology=Greek, isos, equal, similar, and lepis, a scale
|volume=Volume 23
|mention_page=page 8, 138
|treatment_page=page 137
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism duration;whole_organism duration;whole_organism growth form;whole_organism architecture;whole_organism architecture;whole_organism architecture or pubescence or relief;whole_organism pubescence;whole_organism growth form"><b>Herbs,</b> annual or perennial, cespitose, rhizomatous or not, smooth, glabrous.</span> <span class="statement" id="st-d0_s1" data-properties="culm shape"><b>Culms </b>terete.</span> <span class="statement" id="st-d0_s2" data-properties=""><b>Leaves </b>all basal;</span> <span class="statement" id="st-d0_s3" data-properties="sheath coloration;sheath coloration">sheaths green to stramineous, sometimes reddish proximally;</span> <span class="statement" id="st-d0_s4" data-properties="ligule presence">ligules absent;</span> <span class="statement" id="st-d0_s5" data-properties="blade prominence">blades rudimentary to exceeding culms.</span> <span class="statement" id="st-d0_s6" data-properties="inflorescence position or structure subtype;inflorescence position;inflorescence architecture;inflorescence architecture"><b>Inflorescences </b>terminal, sometimes pseudolateral, capitate or solitary spikelet;</span> <span class="statement" id="st-d0_s7" data-properties="spikelet atypical quantity;spikelet quantity">spikelets 1–3 (–15);</span> <span class="statement" id="st-d0_s8" data-properties="involucral-bract atypical quantity;involucral-bract quantity;involucral-bract orientation">involucral-bracts 1 (–2), spreading to erect, like foliage leaf-blades.</span> <span class="statement" id="st-d0_s9" data-properties="scale quantity;scale arrangement"><b>Spikelets:</b> scales 8–25, spirally arranged, each subtending flower.</span> <span class="statement" id="st-d0_s10" data-properties="flower reproduction"><b>Flowers </b>bisexual;</span> <span class="statement" id="st-d0_s11" data-properties="perianth presence">perianth absent;</span> <span class="statement" id="st-d0_s12" data-properties="stamen quantity">stamens 1–3;</span> <span class="statement" id="st-d0_s13" data-properties="style arrangement or course or shape;style shape;base duration;base size">styles linear, 2–3-fid, base persistent, sometimes slightly enlarged.</span> <span class="statement" id="st-d0_s14" data-properties="achene shape;achene shape;achene relief;achene architecture or shape"><b>Achenes </b>biconvex or trigonous, papillose or longitudinally ribbed.</span><!--

-->{{Treatment/Body
|distribution=Worldwide in cool-tropical and temperate regions;especially Africa and Australia
|discussion=<p>Species 69 (4 in the flora).</p><!--
--><p>Isolepis is difficult to delimit on a worldwide basis and has been included in Scirpus in the broad sense. Data derived from embryologic, genetic, and other studies led in recent years to the acceptance of Isolepis as a distinct genus (J. J. Bruhl 1995; P. Goetghebeur 1998; A. M. Muasya et al. 2001).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Spikelets with scales markedly gibbous, often clasping shed achenes, colorless to stramineous, or orangish, or greenish; achenes acutely equilaterally trigonous; leaf sheaths green to stramineous or brown.
|[[#key-0-2| > 2]]
|-id=key-0-1
|1
|Spikelets with scales neither gibbous nor clasping shed achenes, usually at least partly orange- to red-brown or blackish; achenes compressed-trigonous or thickly plano-convex; leaf sheaths usually reddish proximally.
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Scales from middle of spikelet 1.8–2 mm, with awns 0.2–0.5 mm; achenes 1–1.5 mm.
|[[Isolepis carinata|Isolepis carinata]]
|-id=key-0-2
|2
|Scales from middle of spikelet 1–1.2 mm, with mucros to 0.1 mm; achenes 0.7–0.9 mm.
|[[Isolepis pseudosetacea|Isolepis pseudosetacea]]
|-id=key-0-3
|3
|Achenes papillose, not ribbed; culms, leaves, and involucral bracts not orange-punctate or sheaths sparsely so.
|[[Isolepis cernua|Isolepis cernua]]
|-id=key-0-3
|3
|Achenes not papillose, prominently longitudinally ribbed at 10X and minutely transversely ridged at 20–30X; culms, leaves, and involucral bracts orange-punctate at 10– 15X.
|[[Isolepis setacea|Isolepis setacea]]
|}
</div></div><!--

-->{{#Taxon:
name=Isolepis
|author=S. Galen Smith
|authority=R. Brown
|rank=genus
|parent rank=family
|synonyms=Scirpus sect. Isolepis
|basionyms=
|family=Cyperaceae
|illustrator=Amanda Humphrey
|illustration copyright=Flora of North America Association
|distribution=Worldwide in cool-tropical and temperate regions;especially Africa and Australia
|reference=None
|publication title=Prodr.,
|publication year=1810
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V23/V23_218.xml
|genus=Isolepis
|achene architecture or shape=ribbed
|achene relief=papillose
|achene shape=trigonous;biconvex
|base duration=persistent
|base size=enlarged
|blade prominence=rudimentary
|culm shape=terete
|flower reproduction=bisexual
|inflorescence architecture=solitary;capitate
|inflorescence position=pseudolateral
|inflorescence position or structure subtype=terminal
|involucral-bract atypical quantity=1;2
|involucral-bract orientation=spreading;erect
|involucral-bract quantity=1
|ligule presence=absent
|perianth presence=absent
|scale arrangement=arranged
|scale quantity=8;25
|sheath coloration=reddish;green;stramineous
|spikelet atypical quantity=3;15
|spikelet quantity=1;3
|stamen quantity=1;3
|style arrangement or course or shape=linear
|style shape=2-3-fid
|whole_organism architecture=not;rhizomatous
|whole_organism architecture or pubescence or relief=smooth
|whole_organism duration=perennial;annual
|whole_organism growth form=herb;cespitose
|whole_organism pubescence=glabrous
}}<!--

-->[[Category:Treatment]][[Category:Cyperaceae]]