View source for Youngia japonica

{{Treatment/ID
|accepted_name=Youngia japonica
|accepted_authority=(Linneaus) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle
|publications={{Treatment/Publication
|title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr.
|place=7: 194. 1838
|year=1838
}}
|common_names=Oriental false hawksbeard
|basionyms={{Treatment/ID/Basionym
|name=Prenanthes japonica
|authority=Linnaeus
|publication_title=Mant. Pl.,
|publication_place=107. 1767
}}
|synonyms={{Treatment/ID/Synonym
|name=Crepis japonica
|authority=(Linnaeus) Bentham
}} {{Treatment/ID/Synonym
|name=Youngia japonica subsp. elstonii
|authority=(Hochreutiner) Babcock & Stebbins
}}
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Youngia;Youngia japonica
|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>[[Youngia]]</div><div class="higher-taxon"><small>species</small>[[Youngia japonica]]</div></div>
|volume=Volume 19
|mention_page=
|treatment_page=page 256
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>terete, fistulose. <b>Leaves</b>: petioles 1–10 cm, glabrous, puberulent, or densely hairy (hairs often brownish, crinkled); blades 3–12(–25) × 2–4(–6) cm, lateral lobes 0–20, mostly gradually reduced proximally, terminal lobes elliptic, ovate, obovate, or oblong-truncate, larger than laterals, apices obtuse or acute. <b>Peduncles</b> 1–5(–15) mm. <b>Phyllaries</b> 3.5–6 mm, bases and midribs becoming ± spongy, abaxial faces glabrous, glabrate, or hairy (hairs appressed, shining). <b>Florets</b>: corollas mostly 4.5–6.5 mm; anthers dark green (drying purplish); styles and style-branches yellow. <b>Cypselae</b> 1.5–2.5 mm, bases hollow, lightly calloused; pappi 2.5–3.5 mm, slightly surpassing phyllaries. <b>2n</b> = 16.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–summer (year-round south).
|habitat=Waste places, lawns, etc.
|elevation=0–2400 m
|distribution=Ala.;Ark.;D.C.;Fla.;Ga.;Ky.;La.;Md.;Miss.;N.Y.;N.C.;Pa.;S.C.;Tenn.;Tex.;Va.;se Asia;introduced also in Mexico;Central America;South America;Europe;Africa;Pacific Islands;Australia.
|discussion=<p><i>Youngia japonica</i> is now considered a pantropical weed. Relatively few specimens in the flora match what Babcock and Stebbins called subsp. elstonii, with cauline leaves almost as large as the basal and with conspicuous, lobed bracts at the bases of the proximalmost branches of the capitulescence. In subsp. japonica, to which most of our specimens are referred, the cauline leaves are much reduced or lacking, as are the bracts of the capitulescence.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Youngia japonica
|author=
|authority=(Linneaus) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle
|rank=species
|parent rank=genus
|synonyms=Crepis japonica;Youngia japonica subsp. elstonii
|basionyms=Prenanthes japonica
|family=Asteraceae
|phenology=Flowering spring–summer (year-round south).
|habitat=Waste places, lawns, etc.
|elevation=0–2400 m
|distribution=Ala.;Ark.;D.C.;Fla.;Ga.;Ky.;La.;Md.;Miss.;N.Y.;N.C.;Pa.;S.C.;Tenn.;Tex.;Va.;se Asia;introduced also in Mexico;Central America;South America;Europe;Africa;Pacific Islands;Australia.
|introduced=true
|reference=None
|publication title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr.
|publication year=1838
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V19_340.xml
|tribe=Asteraceae tribe Cichorieae
|genus=Youngia
|species=Youngia japonica
}}<!--

-->[[Category:Treatment]][[Category:Youngia]]