View source for Dimeresia

{{Treatment/ID
|accepted_name=Dimeresia
|accepted_authority=A. Gray in A. Gray et al.
|publications={{Treatment/Publication
|title=in A. Gray et al., Syn. Fl. N. Amer. ed.
|place=2, 1(2): 448. 1886
|year=1886
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Dimeresiinae;Dimeresia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Dimeresiinae]]</div><div class="higher-taxon"><small>genus</small>[[Dimeresia]]</div></div>
|etymology=Greek dimeres, in 2 parts or with 2 members, allusion unclear
|volume=Volume 21
|mention_page=page 364, 401
|treatment_page=page 182
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole-organism atypical some measurement;whole-organism some measurement;whole-organism duration"><b>Annuals,</b> 1–3 (–5) cm.</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation"><b>Stems </b>decumbent to erect.</span> <span class="statement" id="st-d0_s2" data-properties=""><b>Leaves </b>basal and/or cauline;</span> <span class="statement" id="st-d0_s3" data-properties="">opposite (crowded, seemingly whorled);</span> <span class="statement" id="st-d0_s4" data-properties="leaf position;leaf position;leaf arrangement;leaf architecture;leaf architecture">subsessile or ± petiolate;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;blade architecture or shape">blades spatulate to oblanceolate, entire.</span> <span class="statement" id="st-d0_s6" data-properties="head architecture or shape"><b>Heads </b>discoid, in clusters (of 2–5, congested, total heads to 100+).</span> <span class="statement" id="st-d0_s7" data-properties="involucre shape;involucre diameter;involucre diameter"><b>Involucres </b>cylindric to obconic, 2 (–4) mm diam.</span> <span class="statement" id="st-d0_s8" data-properties="phyllary atypical quantity;phyllary quantity;series quantity"><b>Phyllaries </b>2 (–3) in 1 series (basally distinct or connate, oblong, herbaceous).</span> <span class="statement" id="st-d0_s9" data-properties="ray-floret presence"><b>Ray-</b>florets 0.</span> <span class="statement" id="st-d0_s10" data-properties="disc-floret atypical quantity;disc-floret quantity;disc-floret reproduction;disc-floret reproduction"><b>Disc-</b>florets 2 (–3), bisexual, fertile;</span> <span class="statement" id="st-d0_s11" data-properties="corolla coloration;corolla coloration;corolla coloration;corolla coloration;corolla coloration;tube height or length or size;lobe quantity;lobe shape">corollas white, pink, or purple, tubes slightly shorter than funnelform throats, lobes 5, deltate-ovate.</span> <span class="statement" id="st-d0_s12" data-properties="receptacle size;receptacle architecture"><b>Receptacles </b>minute, epaleate.</span> <span class="statement" id="st-d0_s13" data-properties="cypsela shape;cypsela coloration or pubescence or relief;cypsela pubescence"><b>Cypselae </b>cylindric to clavate, striate, glabrous;</span> <span class="statement" id="st-d0_s14" data-properties="scale quantity;scale fusion;scale shape;scale shape">pappi falling, of ca. 20 basally connate, setiform to subulate, ± plumose scales (or flattened bristles).</span> <span class="statement" id="st-d0_s15" data-properties="pappus life cycle;x chromosome quantity">x = 7.</span><!--

-->{{Treatment/Body
|distribution=w United States
|discussion=<p>Species 1.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Dimeresia
|author=John L. Strother
|authority=A. Gray in A. Gray et al.
|rank=genus
|parent rank=subtribe
|synonyms=
|basionyms=
|family=Asteraceae
|illustrator=Marjorie C. Leggitt
|illustration copyright=Flora of North America Association
|distribution=w United States
|reference=None
|publication title=in A. Gray et al., Syn. Fl. N. Amer. ed.
|publication year=1886
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21_448.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Dimeresiinae
|genus=Dimeresia
|blade architecture or shape=entire
|blade shape=spatulate;oblanceolate
|corolla coloration=purple;pink;purple;pink;white
|cypsela coloration or pubescence or relief=striate
|cypsela pubescence=glabrous
|cypsela shape=cylindric;clavate
|disc-floret atypical quantity=2;3
|disc-floret quantity=2
|disc-floret reproduction=fertile;bisexual
|head architecture or shape=discoid
|involucre diameter=2;2mm;4mm
|involucre shape=cylindric;obconic
|leaf architecture=petiolate;subsessile
|leaf arrangement=opposite
|leaf position=cauline;basal
|lobe quantity=5
|lobe shape=deltate-ovate
|pappus life cycle=falling
|phyllary atypical quantity=2;3
|phyllary quantity=2
|ray-floret presence=absent
|receptacle architecture=epaleate
|receptacle size=minute
|scale fusion=connate
|scale quantity=20
|scale shape=plumose;setiform;subulate
|series quantity=1
|stem orientation=decumbent;erect
|tube height or length or size=slightly shorter
|whole-organism atypical some measurement=3cm;5cm
|whole-organism duration=annual
|whole-organism some measurement=1cm;3cm
|x chromosome quantity=7
}}<!--

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