View source for Acmella ← Acmella 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=Acmella |accepted_authority=Richard |publications={{Treatment/Publication |title=in C. H. Persoon, Syn. Pl. |place=2: 472. 1807 |year=1807 }} |basionyms= |synonyms= |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Ecliptinae;Acmella |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 Ecliptinae]]</div><div class="higher-taxon"><small>genus</small>[[Acmella]]</div></div> |etymology=From a Singhalese name for a plant now known as Blainvillea acmella (Linnaeus) Philipson |volume=Volume 21 |mention_page=page 64, 65, 67 |treatment_page=page 132 }}<!-- --><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 duration"><b>Annuals </b>or perennials, 10–20 (–30+) cm.</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem architecture"><b>Stems </b>prostrate to erect, usually branched ± throughout.</span> <span class="statement" id="st-d0_s2" data-properties=""><b>Leaves </b>cauline;</span> <span class="statement" id="st-d0_s3" data-properties="">opposite;</span> <span class="statement" id="st-d0_s4" data-properties="leaf position;leaf arrangement;leaf architecture">petiolate [± sessile];</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;base shape;margin shape;margin shape;face pubescence;face pubescence">blades (usually 3-nerved) ovate to rhombic or lanceolate [linear to filiform], bases ± cuneate, margins entire or toothed, faces sparsely pilose to strigillose, glabrescent.</span> <span class="statement" id="st-d0_s6" data-properties="head architecture;head architecture;tip arrangement"><b>Heads </b>radiate or discoid [disciform], borne singly at tips of branches [corymbiform arrays].</span> <span class="statement" id="st-d0_s7" data-properties="involucre shape;involucre diameter"><b>Involucres </b>± hemispheric to ovoid, 3–6+ mm diam.</span> <span class="statement" id="st-d0_s8" data-properties="phyllary duration;phyllary quantity;series quantity"><b>Phyllaries </b>persistent, 8–15+ in 1–3 series (distinct, ovate to linear, subequal or outer longer).</span> <span class="statement" id="st-d0_s9" data-properties="receptacle shape;receptacle architecture"><b>Receptacles </b>conic, paleate (paleae falling with fruit, ± navicular, membranous to scarious, each about equaling subtended floret).</span> <span class="statement" id="st-d0_s10" data-properties="ray-floret presence;ray-floret quantity;ray-floret architecture;ray-floret reproduction"><b>Ray-</b>florets 0 or 5–20+, pistillate, fertile;</span> <span class="statement" id="st-d0_s11" data-properties="corolla coloration">corollas yellow to orange [white or purplish] (laminae ovate to linear) [wanting].</span> <span class="statement" id="st-d0_s12" data-properties="disc-floret atypical quantity;disc-floret quantity;disc-floret reproduction;disc-floret reproduction"><b>Disc-</b>florets 25–100 (–200+) bisexual, fertile;</span> <span class="statement" id="st-d0_s13" data-properties="corolla coloration;tube height or length or size;throat shape;lobe quantity;lobe shape">corollas yellow [orange], tubes shorter than campanulate throats, lobes 4–5, deltate.</span> <span class="statement" id="st-d0_s14" data-properties="cypsela shape;cypsela shape"><b>Cypselae </b>2–3-angled (peripheral) or strongly compressed, ellipsoid to obovoid (glabrous or ciliate on the 2–3 angles or ribs);</span> <span class="statement" id="st-d0_s15" data-properties="bristle quantity;bristle shape">pappi 0, or fragile, of 1–3 awnlike bristles.</span> <span class="statement" id="st-d0_s16" data-properties="pappus presence;pappus fragility;x chromosome quantity">x = 13.</span><!-- -->{{Treatment/Body |distribution=s United States;Mexico;West Indies;Central America;South America;in Asia;Africa;Pacific Islands;Australia |discussion=<p>Species 30 (2 in the flora).</p><!-- --><p>Acmella pilosa R. K. Jansen has been reported as introduced in Florida (http://www.plantatlas.usf.edu); it differs from A. repens mainly by its more densely pilose stems and leaves and more truncate to cordate (versus cuneate) leaf bases.</p> |tables= |references={{Treatment/Reference |id=jansen1985a |text=Jansen, R. K. 1985. The systematics of Acmella (Asteraceae–Heliantheae). Syst. Bot. Monogr. 8: 1–115. }} }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Petioles 3–40+ mm; leaf blades ovate to lance-ovate, mostly 20–40(–100) × 10–35 mm, margins dentate to denticulate or entire |[[Acmella repens|Acmella repens]] |-id=key-0-1 |1 |Petioles 2–4 mm; leaf blades lanceolate, mostly 12–40 × 3–10 mm, margins usually sinuate-dentate, rarely entire |[[Acmella pusilla|Acmella pusilla]] |} </div></div><!-- -->{{#Taxon: name=Acmella |author=John L. Strother |authority=Richard |rank=genus |parent rank=subtribe |synonyms= |basionyms= |family=Asteraceae |illustrator=Barbara Alongi |illustration copyright=Flora of North America Association |distribution=s United States;Mexico;West Indies;Central America;South America;in Asia;Africa;Pacific Islands;Australia |reference=jansen1985a |publication title=in C. H. Persoon, Syn. Pl. |publication year=1807 |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21_322.xml |tribe=Asteraceae tribe Heliantheae |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae |genus=Acmella |base shape=cuneate |blade shape=ovate;rhombic or lanceolate |bristle quantity=1;3 |bristle shape=awnlike |corolla coloration=yellow;yellow;orange |cypsela shape=strongly compressed ellipsoid;obovoid |disc-floret atypical quantity=100;200 |disc-floret quantity=25;100 |disc-floret reproduction=fertile;bisexual |face pubescence=glabrescent;sparsely pilose;strigillose |head architecture=discoid;radiate |involucre diameter=3mm;6mm |involucre shape=less hemispheric;ovoid |leaf architecture=petiolate |leaf arrangement=opposite |leaf position=cauline |lobe quantity=4;5 |lobe shape=deltate |margin shape=toothed;entire |pappus fragility=fragile |pappus presence=absent |phyllary duration=persistent |phyllary quantity=8;15 |ray-floret architecture=pistillate |ray-floret presence=absent |ray-floret quantity=5;20 |ray-floret reproduction=fertile |receptacle architecture=paleate |receptacle shape=conic |series quantity=1;3 |stem architecture=branched |stem orientation=prostrate;erect |throat shape=campanulate |tip arrangement=singly |tube height or length or size=shorter |whole-organism atypical some measurement=20cm;30cm |whole-organism duration=perennial;annual |whole-organism some measurement=10cm;20cm |x chromosome quantity=13 }}<!-- -->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Ecliptinae]] 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 Acmella.