View source for Lactuca sativa

{{Treatment/ID
|accepted_name=Lactuca sativa
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 795. 1753
|year=1753
}}
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Lactuca;Lactuca sativa
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Cichorieae]]</div><div class="higher-taxon"><small>genus</small>[[Lactuca]]</div><div class="higher-taxon"><small>species</small>[[Lactuca sativa]]</div></div>
|volume=Volume 19
|mention_page=page 260
|treatment_page=page 263
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole-organism atypical some measurement;whole-organism atypical some measurement;whole-organism some measurement;whole-organism duration;whole-organism atypical some measurement;whole-organism atypical some measurement;whole-organism some measurement;whole-organism duration"><b>Annuals </b>or biennials, (15–) 30–70 (–100+) cm.</span> <span class="statement" id="st-d0_s1" data-properties=""><b>Leaves </b>on proximal 1/2–3/4 of each stem;</span> <span class="statement" id="st-d0_s2" data-properties="leaf blade shape;cauline leaf architecture or shape;margin shape;margin shape;margin architecture;midrib pubescence">blades of undivided cauline leaves ovate to orbiculate, margins entire or denticulate, seldom prickly, midribs rarely prickly-setose.</span> <span class="statement" id="st-d0_s3" data-properties=""><b>Heads </b>usually in corymbiform, sometimes in paniculiform, arrays.</span> <span class="statement" id="st-d0_s4" data-properties="involucre some measurement"><b>Involucres </b>8–13+ mm.</span> <span class="statement" id="st-d0_s5" data-properties="phyllary orientation"><b>Phyllaries </b>usually erect in fruit.</span> <span class="statement" id="st-d0_s6" data-properties="floret atypical quantity;floret quantity"><b>Florets </b>7–15 (–30+);</span> <span class="statement" id="st-d0_s7" data-properties="corolla coloration;corolla architecture or texture">corollas yellow (sometimes streaked with violet), usually deliquescent.</span> <span class="statement" id="st-d0_s8" data-properties="body coloration;body shape;body shape;body some measurement;beak shape;beak some measurement;face architecture"><b>Cypselae:</b> bodies pale grayish to whitish or tan, ± flattened, obovate, 3–4 mm, beaks ± filiform, 3–5 mm, faces 5–9-nerved;</span> <span class="statement" id="st-d0_s9" data-properties="">pappi white, 3.5–4+ mm.</span> <span class="statement" id="st-d0_s10" data-properties="pappus coloration;pappus some measurement;2n chromosome quantity">2n = 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering mostly Jul–Sep.
|habitat=Disturbed sites, abandoned plantings
|elevation=10–1000 m
|distribution=Ont.;Ala.;Calif.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Maine;Mass.;Mich.;Mo.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;Vt.;Wash.;W.Va.;Eurasia;also in Mexico;or ephemeral nearly worldwide
|introduced=true
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Lactuca sativa
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering mostly Jul–Sep.
|habitat=Disturbed sites, abandoned plantings
|elevation=10–1000 m
|distribution=Ont.;Ala.;Calif.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Maine;Mass.;Mich.;Mo.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;Vt.;Wash.;W.Va.;Eurasia;also in Mexico;or ephemeral nearly worldwide
|introduced=true
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=Introduced
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V19_357.xml
|tribe=Asteraceae tribe Cichorieae
|genus=Lactuca
|species=Lactuca sativa
|2n chromosome quantity=18
|beak shape=filiform
|beak some measurement=3mm;5mm
|body coloration=pale grayish;whitish or tan
|body shape=obovate;flattened
|body some measurement=3mm;4mm
|cauline leaf architecture or shape=undivided
|corolla architecture or texture=deliquescent
|corolla coloration=yellow
|face architecture=5-9-nerved
|floret atypical quantity=15;30
|floret quantity=7;15
|involucre some measurement=8mm;13mm
|leaf blade shape=ovate;orbiculate
|margin architecture=prickly
|margin shape=denticulate;entire
|midrib pubescence=prickly-setose
|pappus coloration=white
|pappus some measurement=3.5mm;4mm
|phyllary orientation=erect
|whole-organism atypical some measurement=70cm;100cm
|whole-organism duration=biennial;annual
|whole-organism some measurement=30cm;70cm
}}<!--

-->[[Category:Treatment]][[Category:Lactuca]]