View source for Platyschkuhria

{{Treatment/ID
|accepted_name=Platyschkuhria
|accepted_authority=(A. Gray) Rydberg
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=33: 154. 1906
|year=1906
}}
|basionyms={{Treatment/ID/Basionym
|name=Schkuhria sect. Platyschkuhria
|authority=A. Gray
|rank=section
|publication_title=Amer. Naturalist
|publication_place=8: 213. 1874
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Chaenactidinae;Platyschkuhria
|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 Chaenactidinae]]</div><div class="higher-taxon"><small>genus</small>[[Platyschkuhria]]</div></div>
|etymology=Greek platys, broad, and genus Schkuhria
|volume=Volume 21
|mention_page=page 364, 366, 383
|treatment_page=page 394
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole-organism some measurement;whole-organism duration"><b>Perennials,</b> 10–50+ cm (bases ± woody, branched caudices).</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation"><b>Stems </b>± erect.</span> <span class="statement" id="st-d0_s2" data-properties=""><b>Leaves </b>basal and cauline;</span> <span class="statement" id="st-d0_s3" data-properties="">mostly alternate;</span> <span class="statement" id="st-d0_s4" data-properties="leaf position;leaf position;leaf arrangement;leaf architecture">petiolate;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;blade shape;face relief">blades mostly lanceolate, sometimes ± ovate, margins en tire, faces sparsely to densely scabrellous (hairs white, straight, conic or fusiform, 0.1–0.8 mm) and glanddotted.</span> <span class="statement" id="st-d0_s6" data-properties="head architecture or arrangement;head arrangement;head atypical quantity;array architecture;array architecture"><b>Heads </b>radiate, borne singly or (3–11) in loose, corymbiform to paniculiform arrays.</span> <span class="statement" id="st-d0_s7" data-properties="involucre shape;involucre diameter"><b>Involucres </b>campanulate to ± hemispheric, 12–25+ mm diam.</span> <span class="statement" id="st-d0_s8" data-properties="phyllary quantity;phyllary fusion;phyllary size;phyllary shape;phyllary growth form or texture;phyllary architecture;phyllary duration;phyllary orientation;series quantity"><b>Phyllaries </b>9–21 in ± 2 series, distinct, subequal, oblong or elliptic to lanceolate, herbaceous, membranous-margined (not purplish-margined), persistent, reflexed in fruit.</span> <span class="statement" id="st-d0_s9" data-properties="receptacle shape;receptacle relief;receptacle architecture"><b>Receptacles </b>± convex, ± pitted, epaleate.</span> <span class="statement" id="st-d0_s10" data-properties="ray-floret quantity;ray-floret architecture;ray-floret reproduction"><b>Ray-</b>florets 6–12, pistillate, fertile;</span> <span class="statement" id="st-d0_s11" data-properties="corolla coloration">corollas yellow.</span> <span class="statement" id="st-d0_s12" data-properties="disc-floret quantity;disc-floret reproduction;disc-floret reproduction"><b>Disc-</b>florets 25–80+, bisexual, fertile;</span> <span class="statement" id="st-d0_s13" data-properties="corolla coloration;tube variability;throat shape;lobe quantity;lobe shape">corollas yellow to orange (glanddotted), tubes about equaling funnelform to campanulate throats, lobes 5, deltate to lance-deltate.</span> <span class="statement" id="st-d0_s14" data-properties="cypsela shape;cypsela shape;cypsela architecture;cypsela pubescence"><b>Cypselae </b>narrowly obpyramidal, 4-angled, finely nerved, ± hirsutulous (at least on angles), not glanddotted;</span> <span class="statement" id="st-d0_s15" data-properties="pappus shape;series quantity">pappi of 8–16, (distinct) lance-elliptic to lance-subulate (basally and/or medially thickened, distally and/or laterally scarious) scales in 1 series (weakly, if at all, aristate).</span> <span class="statement" id="st-d0_s16" data-properties="x chromosome quantity">x = 12.</span><!--

-->{{Treatment/Body
|distribution=w United States
|discussion=<p>Species 1.</p>
|tables=
|references={{Treatment/Reference
|id=brown1983a
|text=Brown, G. K. 1983. Chromosome numbers in Platyschkuhria Rydberg (Compositae) and their sys-tematic significance. Amer. J. Bot. 70: 591–601.
}}{{Treatment/Reference
|id=ellison1971a
|text=Ellison, W. L. 1971. Taxonomy of Platyschkuhria (Compositae). Brittonia 23: 269–279.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Platyschkuhria
|author=John L. Strother
|authority=(A. Gray) Rydberg
|rank=genus
|parent rank=subtribe
|synonyms=
|basionyms=Schkuhria sect. Platyschkuhria
|family=Asteraceae
|illustrator=Linda Ann Vorobik
|illustration copyright=Flora of North America Association
|distribution=w United States
|reference=brown1983a;ellison1971a
|publication title=Bull. Torrey Bot. Club
|publication year=1906
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21_991.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae
|genus=Platyschkuhria
|array architecture=corymbiform;paniculiform
|blade shape=ovate;lanceolate
|corolla coloration=yellow;orange
|cypsela architecture=nerved
|cypsela pubescence=hirsutulous
|cypsela shape=4-angled;obpyramidal
|disc-floret quantity=25;80
|disc-floret reproduction=fertile;bisexual
|face relief=scabrellous
|head architecture or arrangement=radiate
|head arrangement=singly
|head atypical quantity=3;11
|involucre diameter=12mm;25mm
|involucre shape=campanulate;more or less hemispheric
|leaf architecture=petiolate
|leaf arrangement=alternate
|leaf position=cauline;basal
|lobe quantity=5
|lobe shape=deltate;lance-deltate
|pappus shape=lance-elliptic;lance-subulate
|phyllary architecture=membranous-margined
|phyllary duration=persistent
|phyllary fusion=distinct
|phyllary growth form or texture=herbaceous
|phyllary orientation=reflexed
|phyllary quantity=9;21
|phyllary shape=elliptic;lanceolate
|phyllary size=subequal
|ray-floret architecture=pistillate
|ray-floret quantity=6;12
|ray-floret reproduction=fertile
|receptacle architecture=epaleate
|receptacle relief=pitted
|receptacle shape=convex
|series quantity=1;2
|stem orientation=erect
|throat shape=campanulate
|tube variability=equaling
|whole-organism duration=perennial
|whole-organism some measurement=10cm;50cm
|x chromosome quantity=12
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Chaenactidinae]]