View source for Pericome ← Pericome 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=Pericome |accepted_authority=A. Gray |publications={{Treatment/Publication |title=Smithsonian Contr. Knowl. |place=5(6): 81. 1853 |year=1853 }} |basionyms= |synonyms= |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Peritylinae;Pericome |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 Peritylinae]]</div><div class="higher-taxon"><small>genus</small>[[Pericome]]</div></div> |etymology=Greek peri, around, and come, tuft of hairs, alluding to ciliate margins of cypselae |volume=Volume 21 |mention_page=page 317 |treatment_page=page 334 }}<!-- --><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 growth form"><b>Perennials </b>or subshrubs, (20–) 50–150+ cm.</span> <span class="statement" id="st-d0_s1" data-properties="stem quantity;stem orientation;stem architecture"><b>Stems </b>multiple, spreading, branched.</span> <span class="statement" id="st-d0_s2" data-properties="leaf position"><b>Leaves </b>mostly cauline;</span> <span class="statement" id="st-d0_s3" data-properties="leaf arrangement">mostly opposite, distal sometimes alternate;</span> <span class="statement" id="st-d0_s4" data-properties="distal leaf arrangement;distal leaf architecture">petiolate;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;margin architecture or shape;margin shape;margin shape;margin shape;margin shape;margin shape;face pubescence">blades (3-nerved) usually deltate-hastate basally, sometimes subhastate, ovate, or cordate, margins entire, cleft, toothed, or 3–5-lobed (apices long-attenuate, caudate), faces sparsely to densely puberulent, usually copiously glanddotted (distal leaves rarely tomentulose).</span> <span class="statement" id="st-d0_s6" data-properties="head architecture or shape;array architecture;array architecture"><b>Heads </b>discoid, in corymbiform or compound-corymbiform arrays.</span> <span class="statement" id="st-d0_s7" data-properties="involucre shape;involucre diameter"><b>Involucres </b>turbinate-campanulate, 4–10 mm diam.</span> <span class="statement" id="st-d0_s8" data-properties="phyllary quantity;series quantity"><b>Phyllaries </b>16–24 in 1 series (connate 1/2+ their lengths, linear, subequal).</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="disc-floret quantity;disc-floret reproduction;disc-floret reproduction"><b>Disc-</b>florets 30–70, bisexual, fertile;</span> <span class="statement" id="st-d0_s11" data-properties="corolla coloration;tube height or length or size;throat shape;lobe quantity;lobe shape">corollas yellow (glabrate or densely glanddotted), tubes mostly shorter than abruptly dilated, cylindric throats, lobes 4, triangular.</span> <span class="statement" id="st-d0_s12" data-properties="cypsela shape;cypsela shape"><b>Cypselae </b>(black with pale margins) flattened, oblong-oblanceolate to narrowly linear-oblanceolate (margins calloused or thin, densely ciliate);</span> <span class="statement" id="st-d0_s13" data-properties="scale quantity;scale fusion;scale fusion;scale shape;scale atypical quantity;scale quantity;bristle pubescence">pappi 0 or, persistent or falling, vestigial, or of 8–12 distinct or partially connate, fimbriate to laciniate scales (sometimes 1–4 scales aristate) plus 1–2 (–6) ciliolate bristles.</span> <span class="statement" id="st-d0_s14" data-properties="pappus presence;pappus quantity;pappus duration;pappus life cycle;pappus prominence;x chromosome quantity">x = 18.</span><!-- -->{{Treatment/Body |distribution=sw United States;n Mexico |discussion=<p>Species 2 (1 in the flora).</p><!-- --><p>The close relationship of Pericome to Perityle is apparent in the similarity of general vegetative and floral morphology, particularly in the similarities of cypselae and pappus structure. The shrubby habit and capitulescence of densely aggregated heads with united involucral bracts of Pericome distinguish it from Perityle. Pericome is widespread in Upper Sonoran and Montane zones of the southwestern United States.</p> |tables= |references={{Treatment/Reference |id=powell1973b |text=Powell, A. M. 1973. Taxonomy of Pericome (Compositae–Peritylinae). SouthW. Naturalist 18: 335–339. }} }}<!-- --><!-- -->{{#Taxon: name=Pericome |author=Sharon C. Yarborough;A. Michael Powell |authority=A. Gray |rank=genus |parent rank=subtribe |synonyms= |basionyms= |family=Asteraceae |illustrator=Bee F. Gunn |illustration copyright=Flora of North America Association |distribution=sw United States;n Mexico |reference=powell1973b |publication title=Smithsonian Contr. Knowl. |publication year=1853 |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21_837.xml |tribe=Asteraceae tribe Heliantheae |subtribe=Asteraceae (tribe Heliantheae) subtribe Peritylinae |genus=Pericome |array architecture=compound-corymbiform;corymbiform |blade shape=cordate;ovate;cordate;ovate;subhastate;deltate-hastate |bristle pubescence=ciliolate |corolla coloration=yellow |cypsela shape=oblong-oblanceolate;narrowly linear-oblanceolate |disc-floret quantity=30;70 |disc-floret reproduction=fertile;bisexual |distal leaf architecture=petiolate |distal leaf arrangement=alternate |face pubescence=puberulent |head architecture or shape=discoid |involucre diameter=4mm;10mm |involucre shape=turbinate-campanulate |leaf arrangement=opposite |leaf position=cauline |lobe quantity=4 |lobe shape=triangular |margin architecture or shape=entire |margin shape=3-5-lobed;toothed;3-5-lobed;toothed;cleft |pappus duration=persistent |pappus life cycle=falling |pappus presence=absent |pappus prominence=vestigial |pappus quantity=, |phyllary quantity=16;24 |receptacle architecture=epaleate |receptacle relief=pitted |receptacle shape=convex |scale atypical quantity=2;6 |scale fusion=connate;distinct |scale quantity=1;2 |scale shape=fimbriate;laciniate |series quantity=1 |stem architecture=branched |stem orientation=spreading |stem quantity=multiple |throat shape=cylindric |tube height or length or size=mostly shorter than abruptly dilated |whole-organism atypical some measurement=20cm;50cm |whole-organism duration=perennial |whole-organism some measurement=50cm;150cm |whole_organism atypical some measurement=20cm;50cm |whole_organism growth form=subshrub |whole_organism some measurement=50cm;150cm |x chromosome quantity=18 }}<!-- -->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Peritylinae]] 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 Pericome.