View source for Youngia ← Youngia You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Youngia |accepted_authority=Cassini |publications={{Treatment/Publication |title=Ann. Sci. Nat. (Paris) |place=23: 88. 1831 |year=1831 }} |basionyms= |synonyms= |hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Youngia |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> |etymology=For “deux Anglais célèbres, l’un comme poète, l’autre comme physicien,” both named Young; the poet may have been Edward Young (also dramatist), 1683–1765; the physician may have been Thomas Young (also physicist and Egyptologist), 1773–1829 |volume=Volume 19 |mention_page=page 217 |treatment_page=page 255 }}<!-- --><span class="statement" id="st-d0_s0" data-properties="whole-organism duration"><b>Annuals,</b> biennials [perennials], (10–) 20–90+ cm;</span> <span class="statement" id="st-d0_s1" data-properties="whole-organism atypical some measurement;whole-organism some measurement;whole-organism architecture;whole-organism duration">taprooted.</span> <span class="statement" id="st-d0_s2" data-properties="stem quantity;stem orientation;stem architecture;stem pubescence;stem pubescence;stem pubescence;stem pubescence;stem pubescence"><b>Stems </b>1–5+, erect (often scapiform), usually branched distally, sometimes throughout, proximally glabrous, puberulent, or tomentose.</span> <span class="statement" id="st-d0_s3" data-properties="leaf position"><b>Leaves </b>all or mostly basal;</span> <span class="statement" id="st-d0_s4" data-properties="leaf architecture">petiolate (petiole bases often dilated, ± clasping);</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;margin shape;ultimate margin shape">blades oblong or ovate to oblanceolate, margins usually pinnately lobed (± lyrate), ultimate margins denticulate.</span> <span class="statement" id="st-d0_s6" data-properties="head atypical quantity;array architecture"><b>Heads </b>(4–150) in corymbiform to paniculiform arrays.</span> <span class="statement" id="st-d0_s7" data-properties="peduncle shape;peduncle architecture"><b>Peduncles </b>(filiform) not distally inflated, seldom bracteate.</span> <span class="statement" id="st-d0_s8" data-properties="bractlet quantity;bractlet shape"><b>Calyculi </b>of 3–5+, deltate to ovate (membranous) bractlets.</span> <span class="statement" id="st-d0_s9" data-properties="involucre shape;involucre diameter"><b>Involucres </b>cylindric to campanulate, 2–3+ mm diam.</span> <span class="statement" id="st-d0_s10" data-properties="phyllary quantity;phyllary shape;phyllary variability;series quantity;margin texture;apex shape"><b>Phyllaries </b>usually 8 in 1–2 series, lanceolate to linear, ± equal (reflexed in fruit), margins ± scarious, apices obtuse to acute.</span> <span class="statement" id="st-d0_s11" data-properties="receptacle shape;receptacle relief;receptacle pubescence;receptacle architecture"><b>Receptacles </b>flat to convex, ± pitted, glabrous, epaleate.</span> <span class="statement" id="st-d0_s12" data-properties="floret quantity"><b>Florets </b>8–25+;</span> <span class="statement" id="st-d0_s13" data-properties="corolla coloration;corolla coloration">corollas yellow, sometimes abaxially purplish (anther bases with linear, acute auricles).</span> <span class="statement" id="st-d0_s14" data-properties="cypsela coloration;cypsela shape;cypsela shape;cypsela architecture or shape;rib quantity;rib relief"><b>Cypselae </b>± reddish-brown, ± fusiform and compressed [± terete], weakly or not beaked, ribs 11–13, ± spiculate to scabrellous on ribs;</span> <span class="statement" id="st-d0_s15" data-properties="bristle quantity;bristle fusion;bristle coloration;bristle size;bristle architecture;series quantity">pappi (borne on discs at tips of cypselae) persistent (fragile) [falling], of 40–60+, basally coherent [distinct], white [yellowish or grayish], subequal, smooth to barbellulate bristles in ± 1 series.</span> <span class="statement" id="st-d0_s16" data-properties="pappus duration;x chromosome quantity;x chromosome quantity">x = 5 or 8.</span><!-- -->{{Treatment/Body |distribution=Asia;also in South America;Europe;Africa;Pacific Islands;Australia |introduced=true |discussion=<p>Species ca. 30 (1 in the flora).</p><!-- --><p>Youngia americana Babcock (based on a specimen from Alaska) has not been used as an accepted name for plants in the flora area; it was treated as a synonym of Crepis nana var. lyratifolia (Turczaninow) Hultén by E. Hultén (1968).</p> |tables= |references={{Treatment/Reference |id=babcock1937a |text=Babcock, E. B. and G. L. Stebbins. 1937. The genus Youngia. Publ. Carnegie Inst. Wash. 484. }} }}<!-- --><!-- -->{{#Taxon: name=Youngia |author=Phyllis L. Spurr |authority=Cassini |rank=genus |parent rank=tribe |synonyms= |basionyms= |family=Asteraceae |illustrator=Yevonn Wilson-Ramsey |illustration copyright=Flora of North America Association |distribution=Asia;also in South America;Europe;Africa;Pacific Islands;Australia |introduced=true |reference=babcock1937a |publication title=Ann. Sci. Nat. (Paris) |publication year=1831 |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V19_339.xml |tribe=Asteraceae tribe Cichorieae |genus=Youngia |apex shape=obtuse;acute |array architecture=corymbiform;paniculiform |blade shape=ovate;oblanceolate |bractlet quantity=3;5 |bractlet shape=deltate;ovate |bristle architecture=smooth;barbellulate |bristle coloration=white |bristle fusion=coherent |bristle quantity=40;60 |bristle size=subequal |corolla coloration=purplish;yellow |cypsela architecture or shape=beaked |cypsela coloration=reddish-brown |cypsela shape=compressed;fusiform |floret quantity=8;25 |head atypical quantity=4;150 |involucre diameter=2mm;3mm |involucre shape=cylindric;campanulate |leaf architecture=petiolate |leaf position=basal |margin shape=lobed |margin texture=scarious |pappus duration=persistent |peduncle architecture=bracteate |peduncle shape=inflated |phyllary quantity=8 |phyllary shape=lanceolate;linear |phyllary variability=equal |receptacle architecture=epaleate |receptacle pubescence=glabrous |receptacle relief=pitted |receptacle shape=flat;convex |rib quantity=11;13 |rib relief=less spiculate;scabrellous |series quantity=1;1;2 |stem architecture=branched |stem orientation=erect |stem pubescence=tomentose;puberulent;tomentose;puberulent;glabrous |stem quantity=1;5 |ultimate margin shape=denticulate |whole-organism architecture=taprooted |whole-organism atypical some measurement=10cm;20cm |whole-organism duration=biennial;annual |whole-organism some measurement=20cm;90cm |x chromosome quantity=8;5 }}<!-- -->[[Category:Treatment]][[Category:Asteraceae tribe Cichorieae]] Templates used on this page: Template:Asteraceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Template:Treatment/Publication (view source) Template:Treatment/Reference (view source) Return to Youngia.