View source for Isocarpha

{{Treatment/ID
|accepted_name=Isocarpha
|accepted_authority=R. Brown
|publications={{Treatment/Publication
|title=Trans. Linn. Soc. London
|place=12: 110. 1817
|year=1817
}}
|common_names=Pearlhead
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Eupatorieae;Isocarpha
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Eupatorieae]]</div><div class="higher-taxon"><small>genus</small>[[Isocarpha]]</div></div>
|etymology=Greek iso -, same, and carphos, small dry body, evidently alluding to uniform receptacular paleae
|volume=Volume 21
|mention_page=page 460
|treatment_page=page 490
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole-organism some measurement;whole-organism duration;whole_organism some measurement;whole_organism growth form"><b>Perennials </b>or subshrubs [annuals], 10–150 cm.</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem growth form or orientation"><b>Stems </b>usually erect, sometimes basally decumbent [creeping].</span> <span class="statement" id="st-d0_s2" data-properties=""><b>Leaves </b>cauline;</span> <span class="statement" id="st-d0_s3" data-properties="">mostly opposite (distal sometimes alternate) [alternate];</span> <span class="statement" id="st-d0_s4" data-properties="leaf position;leaf arrangement;leaf architecture;leaf architecture">petiolate or sessile;</span> <span class="statement" id="st-d0_s5" data-properties="blade architecture;blade arrangement or shape;blade arrangement or shape;margin architecture or shape;margin architecture or shape;face pubescence;face architecture;face arrangement or shape">blades ± 3-nerved, elliptic to narrowly lance-elliptic [ovate or lanceolate to linear], margins entire or serrulate [dentate], faces glabrate to weakly hirsutulous or pilosulous, glanddotted.</span> <span class="statement" id="st-d0_s6" data-properties="head architecture or shape;head arrangement;head arrangement;array arrangement or density;array architecture"><b>Heads </b>discoid, borne singly or in tight, corymbiform to subcapitate [paniculiform] arrays.</span> <span class="statement" id="st-d0_s7" data-properties="involucre shape;involucre diameter"><b>Involucres </b>± obconic, 4–6 mm diam.</span> <span class="statement" id="st-d0_s8" data-properties="phyllary duration;phyllary quantity;phyllary architecture;phyllary shape;phyllary variability;series quantity"><b>Phyllaries </b>persistent, 10–15+ in 2+ series, [1–] 2–3 [–6] -nerved, ovate or elliptic to lanceolate or linear, ± equal.</span> <span class="statement" id="st-d0_s9" data-properties="receptacle shape;receptacle architecture"><b>Receptacles </b>conic to columnar, paleate (paleae similar to inner phyllaries).</span> <span class="statement" id="st-d0_s10" data-properties="floret quantity"><b>Florets </b>60–200+;</span> <span class="statement" id="st-d0_s11" data-properties="corolla coloration;corolla coloration;lobe quantity;lobe shape">corollas white or pinkish, throats funnelform (lengths ca. 2 times diams.) [cylindric or campanulate], lobes 5, ± deltate;</span> <span class="statement" id="st-d0_s12" data-properties="base size;base pubescence;branch shape">styles: bases enlarged, glabrous [papillose], branches filiform.</span> <span class="statement" id="st-d0_s13" data-properties="cypsela shape;cypsela architecture or shape;cypsela pubescence"><b>Cypselae </b>prismatic, 5-ribbed, glabrous [pubescent];</span> <span class="statement" id="st-d0_s14" data-properties="">pappi 0.</span> <span class="statement" id="st-d0_s15" data-properties="pappus presence;x chromosome quantity">x = 10.</span><!--

-->{{Treatment/Body
|distribution=s;c United States;Mexico;West Indies;Central America;South America
|discussion=<p>Species 5 (1 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=keil1981a
|text=Keil, D. J. and T. F. Stuessy. 1981. Systematics of Isocarpha (Compositae: Eupatorieae). Syst. Bot. 6: 258–287.
}}
}}<!--

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-->{{#Taxon:
name=Isocarpha
|author=Guy L. Nesom
|authority=R. Brown
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=s;c United States;Mexico;West Indies;Central America;South America
|reference=keil1981a
|publication title=Trans. Linn. Soc. London
|publication year=1817
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21_1234.xml
|tribe=Asteraceae tribe Eupatorieae
|genus=Isocarpha
|array architecture=corymbiform;subcapitate
|array arrangement or density=tight
|base pubescence=glabrous
|base size=enlarged
|blade architecture=3-nerved
|blade arrangement or shape=lance-elliptic;elliptic to narrowly
|branch shape=filiform
|corolla coloration=pinkish;white
|cypsela architecture or shape=5-ribbed
|cypsela pubescence=glabrous
|cypsela shape=prismatic
|face architecture=3-nerved
|face arrangement or shape=elliptic to narrowly
|face pubescence=glabrate;weakly hirsutulous or pilosulous
|floret quantity=60;200
|head architecture or shape=discoid
|head arrangement=in tight , corymbiform to subcapitate arrays;singly
|involucre diameter=4mm;6mm
|involucre shape=obconic
|leaf architecture=sessile;petiolate
|leaf arrangement=opposite
|leaf position=cauline
|lobe quantity=5
|lobe shape=deltate
|margin architecture or shape=serrulate;entire
|pappus presence=absent
|phyllary architecture=[1-]2-3[-6]-nerved
|phyllary duration=persistent
|phyllary quantity=10;15
|phyllary shape=elliptic;lanceolate or linear
|phyllary variability=equal
|receptacle architecture=paleate
|receptacle shape=conic;columnar
|stem growth form or orientation=decumbent
|stem orientation=erect
|whole-organism duration=perennial
|whole-organism some measurement=10cm;150cm
|whole_organism growth form=subshrub
|whole_organism some measurement=10cm;150cm
|x chromosome quantity=10
}}<!--

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