View source for Chamaemelum

{{Treatment/ID
|accepted_name=Chamaemelum
|accepted_authority=Miller
|publications={{Treatment/Publication
|title=Gard. Dict. Abr. ed.
|place=4, vol. 1. 1754
|year=1754
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Anthemideae;Chamaemelum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Anthemideae]]</div><div class="higher-taxon"><small>genus</small>[[Chamaemelum]]</div></div>
|etymology=Greek chamae- , on the ground, lowly, creeping, and melon, orchard, alluding to common habitat
|volume=Volume 19
|mention_page=page 14, 26, 487
|treatment_page=page 496
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole-organism atypical some measurement;whole-organism some measurement;whole-organism duration;whole-organism atypical some measurement;whole-organism some measurement;whole-organism duration"><b>Annuals </b>or perennials, 5–20 (–35+) cm, (aromatic).</span> <span class="statement" id="st-d0_s1" data-properties="stem quantity;stem orientation;stem orientation;stem orientation;stem orientation;stem orientation;stem architecture;stem pubescence;stem pubescence;stem pubescence"><b>Stems </b>usually 1, erect, ascending, or prostrate, usually branched, glabrous or glabrate, puberulent, or villous to strigoso-sericeous (hairs basifixed).</span> <span class="statement" id="st-d0_s2" data-properties="leaf position"><b>Leaves </b>mostly cauline (at flowering);</span> <span class="statement" id="st-d0_s3" data-properties="">alternate;</span> <span class="statement" id="st-d0_s4" data-properties="leaf arrangement;leaf architecture;leaf architecture">petiolate or sessile;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;ultimate margin architecture or shape;face pubescence;face pubescence;face pubescence">blades oblong, ovate, elliptic, or spatulate, 1–3-pinnately lobed (ultimate lobes narrowly spatulate to linear or filiform, apices apiculate), ultimate margins entire, faces glabrous or glabrate, puberulent, or villous to strigoso-sericeous.</span> <span class="statement" id="st-d0_s6" data-properties="head architecture;head architecture;head arrangement;head arrangement;array architecture or arrangement;array architecture"><b>Heads </b>radiate or discoid, borne singly or in lax corymbiform arrays.</span> <span class="statement" id="st-d0_s7" data-properties="involucre shape;involucre width;involucre diameter"><b>Involucres </b>hemispheric or broader, 6–10 mm diam.</span> <span class="statement" id="st-d0_s8" data-properties="phyllary duration;phyllary quantity;phyllary shape;phyllary size;series quantity;margin texture;apex texture"><b>Phyllaries </b>persistent, 22–45+ in 3–4+ series (sometimes reflexed in fruit), mostly ovate to oblong, unequal, margins and apices (colorless, brownish, or greenish) scarious.</span> <span class="statement" id="st-d0_s9" data-properties="receptacle shape;receptacle architecture"><b>Receptacles </b>hemispheric to conic, paleate;</span> <span class="statement" id="st-d0_s10" data-properties="palea shape">paleae weakly navicular to ± flat (medially chartaceous, margins scarious, apices rounded).</span> <span class="statement" id="st-d0_s11" data-properties="ray-floret presence;ray-floret quantity;ray-floret architecture;ray-floret reproduction;ray-floret architecture;ray-floret reproduction"><b>Ray-</b>florets 0 or 12–21+, pistillate and fertile or styliferous and sterile;</span> <span class="statement" id="st-d0_s12" data-properties="corolla coloration;lamina shape">corollas white, laminae oblong (often marcescent, reflexed in fruit).</span> <span class="statement" id="st-d0_s13" data-properties="disc-floret quantity;disc-floret reproduction;disc-floret reproduction"><b>Disc-</b>florets 100–200+, bisexual, fertile;</span> <span class="statement" id="st-d0_s14" data-properties="corolla coloration;tube shape;lobe quantity;lobe shape">corollas yellow, tubes ± cylindric (somewhat dilated, bases saccate, weakly clasping apices of cypselae), throats funnelform, lobes 5, deltate.</span> <span class="statement" id="st-d0_s15" data-properties="cypsela shape;cypsela shape;rib position;rib quantity;rib position;nerve quantity;nerve position;nerve position;face coloration or pubescence or relief;face pubescence"><b>Cypselae </b>± obovoid, weakly obcompressed, ribs or nerves (weak): 2 lateral, 1 adaxial, faces finely striate, glabrous (pericarps with myxogenic cells in longitudinal rows, without resin sacs);</span> <span class="statement" id="st-d0_s16" data-properties="cypsela shape;cypsela shape">pappi 0.</span> <span class="statement" id="st-d0_s17" data-properties="pappus presence;x chromosome quantity">x = 9.</span><!--

-->{{Treatment/Body
|distribution=s;w Europe;n Africa
|introduced=true
|discussion=<p>Species 2 (2 in the flora).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Annuals; stems erect or ascending, glabrous or puberulent; margins and apices of phyllaries brownish
|[[Chamaemelum fuscatum|Chamaemelum fuscatum]]
|-id=key-0-1
|1
|Perennials; stems mostly prostrate (much branched, often forming mats), ± strigoso-sericeous to villous; margins and apices of phyllaries greenish or lacking pigment
|[[Chamaemelum nobile|Chamaemelum nobile]]
|}
</div></div><!--

-->{{#Taxon:
name=Chamaemelum
|author=Linda E. Watson
|authority=Miller
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=s;w Europe;n Africa
|introduced=true
|reference=None
|publication title=Gard. Dict. Abr. ed.
|publication year=1754
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V19_828.xml
|tribe=Asteraceae tribe Anthemideae
|genus=Chamaemelum
|apex texture=scarious
|array architecture=corymbiform
|array architecture or arrangement=lax
|blade shape=lobed;spatulate;elliptic;spatulate;elliptic;ovate;oblong
|corolla coloration=yellow;white
|cypsela shape=obcompressed;obovoid;obcompressed;obovoid
|disc-floret quantity=100;200
|disc-floret reproduction=fertile;bisexual
|face coloration or pubescence or relief=striate
|face pubescence=glabrous;glabrate puberulent or villous;strigoso-sericeous
|head architecture=discoid;radiate
|head arrangement=in lax corymbiform arrays;singly
|involucre diameter=6mm;10mm
|involucre shape=hemispheric
|involucre width=broader
|lamina shape=oblong
|leaf architecture=sessile;petiolate
|leaf arrangement=alternate
|leaf position=cauline
|lobe quantity=5
|lobe shape=deltate
|margin texture=scarious
|nerve position=adaxial;lateral
|nerve quantity=2
|palea shape=weakly navicular;more or less flat
|pappus presence=absent
|phyllary duration=persistent
|phyllary quantity=22;45
|phyllary shape=mostly ovate;oblong
|phyllary size=unequal
|ray-floret architecture=styliferous;pistillate
|ray-floret presence=absent
|ray-floret quantity=12;21
|ray-floret reproduction=sterile;fertile
|receptacle architecture=paleate
|receptacle shape=hemispheric;conic
|rib position=adaxial;lateral
|rib quantity=1
|series quantity=3;4
|stem architecture=branched
|stem orientation=prostrate;ascending;prostrate;ascending;erect
|stem pubescence=glabrate puberulent or villous;strigoso-sericeous
|stem quantity=1
|tube shape=cylindric
|ultimate margin architecture or shape=entire
|whole-organism atypical some measurement=20cm;35cm
|whole-organism duration=perennial;annual
|whole-organism some measurement=5cm;20cm
|x chromosome quantity=9
}}<!--

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