View source for Erechtites

{{Treatment/ID
|accepted_name=Erechtites
|accepted_authority=Rafinesque
|publications={{Treatment/Publication
|title=Fl. Ludov.,
|place=65. 1817
|year=1817
}}
|common_names=Fireweed
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Erechtites
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Senecioneae]]</div><div class="higher-taxon"><small>genus</small>[[Erechtites]]</div></div>
|etymology=A name mentioned by Dioscorides, presumably for a plant now referable to Senecio or a related genus
|volume=Volume 20
|mention_page=page 542, 603
|treatment_page=page 602
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole-organism some measurement;whole-organism duration;whole-organism some measurement;whole-organism duration"><b>Annuals </b>or perennials (often with rank, pungent odor), mostly 20–200 cm (taprooted; glabrous or ± tomentose or villous, often unevenly glabrescent).</span> <span class="statement" id="st-d0_s1" data-properties="stem quantity;stem orientation"><b>Stems </b>usually 1, usually 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="">alternate;</span> <span class="statement" id="st-d0_s4" data-properties="leaf position;leaf position;leaf arrangement;leaf architecture;leaf architecture">petiolate or sessile;</span> <span class="statement" id="st-d0_s5" data-properties="blade architecture;blade shape;ultimate margin shape;ultimate margin shape;ultimate margin shape;ultimate margin shape;ultimate margin shape;face pubescence;face pubescence;face pubescence">blades pinnately nerved, mostly ovate to lanceolate (sometimes pinnately lobed or dissected), ultimate margins entire, denticulate, or toothed, faces glabrous or ± tomentose or villous (often unevenly glabrescent).</span> <span class="statement" id="st-d0_s6" data-properties="head architecture or shape;array architecture;array architecture"><b>Heads </b>disciform, in cymiform or corymbiform arrays.</span> <span class="statement" id="st-d0_s7" data-properties="bractlet atypical quantity;bractlet quantity"><b>Calyculi </b>of 1–6 [–12+] bractlets.</span> <span class="statement" id="st-d0_s8" data-properties="involucre shape;involucre diameter"><b>Involucres </b>urceolate or cylindric to turbinate, 2–10+ mm diam.</span> <span class="statement" id="st-d0_s9" data-properties="phyllarie duration;phyllarie atypical quantity;phyllarie quantity;phyllarie quantity;phyllarie quantity;phyllarie orientation;phyllarie fusion;phyllarie shape;phyllarie variability;series quantity;margin texture"><b>Phyllaries </b>persistent, usually (5), 8, 13, or 21 in 1–2 series, erect (sometimes reflexed in fruit), distinct (margins ± interlocking), lanceolate to linear, equal, margins ± scarious (tips green or with minute dark spots).</span> <span class="statement" id="st-d0_s10" data-properties="receptacle shape;receptacle relief;receptacle architecture or pubescence or relief;receptacle architecture"><b>Receptacles </b>flat to convex, ± foveolate or smooth, epaleate.</span> <span class="statement" id="st-d0_s11" data-properties="ray-floret presence"><b>Ray-</b>florets 0.</span> <span class="statement" id="st-d0_s12" data-properties="peripheral floret quantity;corolla coloration;corolla shape;lobe quantity;lobe shape;lobe orientation"><b>Peripheral </b>(pistillate) florets 10–100+ (in 1–3+ series), corollas whitish to pale-yellow, tubular-filiform, lobes 4–5, deltate, erect.</span> <span class="statement" id="st-d0_s13" data-properties="disc-floret atypical quantity;disc-floret atypical quantity;disc-floret quantity;disc-floret reproduction;disc-floret reproduction;disc-floret position;disc-floret architecture"><b>Disc-</b>florets (3–) 10–20 (–50+), mostly bisexual and fertile, inner sometimes functionally staminate;</span> <span class="statement" id="st-d0_s14" data-properties="corolla coloration;tube length or size;lobe quantity;lobe orientation;lobe shape">corollas whitish to pale-yellow [pinkish], tubes longer than funnelform throats, lobes 4–5, erect to spreading, lanceovate;</span> <span class="statement" id="st-d0_s15" data-properties="style-branch structure in adjective form;line quantity;apex shape">style-branches stigmatic in 2 lines, apices truncate-penicillate.</span> <span class="statement" id="st-d0_s16" data-properties="cypsela shape;cypsela shape;cypsela architecture;cypsela pubescence;cypsela pubescence"><b>Cypselae </b>(stramineous to brown or purple) ± prismatic and 5-angled or ribbed or ± obovoid to ± fusiform and 10–20-nerved, glabrous or puberulent (on or between ribs or nerves);</span> <span class="statement" id="st-d0_s17" data-properties="bristle quantity;bristle coloration;bristle architecture">pappi readily falling, of 60–120, white [reddish], barbellulate bristles.</span> <span class="statement" id="st-d0_s18" data-properties="pappus life cycle;x chromosome quantity">x = 20.</span><!--

-->{{Treatment/Body
|distribution=North America;West Indies;South America;Pacific Islands (New Zealand);Australia;some species widely scattered as weeds
|discussion=<p>Species ca. 12 (3 in the flora).</p><!--
--><p>The name Erechtites has been treated traditionally as grammatically feminine; the International Code of Botanical Nomenclature (Art. 62.4) notes that generic names ending in “-ites” are to be treated as masculine. Specific and infraspecific epithets are here presented in the masculine gender.</p>
|tables=
|references={{Treatment/Reference
|id=barkley1978b
|text=Barkley, T. M. and A. Cronquist. 1978. Erechtites. In: N. L. Britton et al., eds. 1905+. North American Flora.... 47+ vols. New York. Ser. 2, part 10, pp. 139–142.
}}{{Treatment/Reference
|id=belcher1956a
|text=Belcher, R. O. 1956. A revision of Erechtites (Compositae) with inquiries into Senecio and Arrhenechthites. Ann. Missouri Bot. Gard. 43: 1–85.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Involucres urceolate or obconic, 10–17 mm; phyllaries usually 21; receptacles 5–12+ mm diam
|[[Erechtites hieraciifolius|Erechtites hieraciifolius]]
|-id=key-0-1
|1
|Involucres cylindric or turbinate, 4–7 mm; phyllaries usually 8 or 13; receptacles 3–5(–6) mm diam
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Leaves lobed or pinnatifid; phyllaries usually 13
|[[Erechtites glomeratus|Erechtites glomeratus]]
|-id=key-0-2
|2
|Leaves entire or dentate (not lobed or pinnatifid); phyllaries usually 8
|[[Erechtites minimus|Erechtites minimus]]
|}
</div></div><!--

-->{{#Taxon:
name=Erechtites
|author=Theodore M. Barkley†
|authority=Rafinesque
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|illustrator=Linny Heagy
|illustration copyright=Flora of North America Association
|distribution=North America;West Indies;South America;Pacific Islands (New Zealand);Australia;some species widely scattered as weeds
|reference=barkley1978b;belcher1956a
|publication title=Fl. Ludov.,
|publication year=1817
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V20_1352.xml
|tribe=Asteraceae tribe Senecioneae
|genus=Erechtites
|apex shape=truncate-penicillate
|array architecture=corymbiform;cymiform
|blade architecture=nerved
|blade shape=mostly ovate;lanceolate
|bractlet atypical quantity=6;12
|bractlet quantity=1;6
|bristle architecture=barbellulate
|bristle coloration=white
|bristle quantity=60;120
|corolla coloration=whitish;pale-yellow
|corolla shape=tubular-filiform
|cypsela architecture=10-20-nerved
|cypsela pubescence=puberulent;glabrous
|cypsela shape=ribbed or more or less obovoid;more or less fusiform
|disc-floret architecture=staminate
|disc-floret atypical quantity=20;50
|disc-floret position=inner
|disc-floret quantity=10;20
|disc-floret reproduction=fertile;bisexual
|face pubescence=villous;tomentose;glabrous
|head architecture or shape=disciform
|involucre diameter=2mm;10mm
|involucre shape=cylindric;turbinate
|leaf architecture=sessile;petiolate
|leaf arrangement=alternate
|leaf position=cauline;basal
|line quantity=2
|lobe orientation=erect;spreading
|lobe quantity=4;5
|lobe shape=lanceovate;deltate
|margin texture=scarious
|pappus life cycle=falling
|peripheral floret quantity=10;100
|phyllarie atypical quantity=5
|phyllarie duration=persistent
|phyllarie fusion=distinct
|phyllarie orientation=erect
|phyllarie quantity=21;13;8
|phyllarie shape=lanceolate;linear
|phyllarie variability=equal
|ray-floret presence=absent
|receptacle architecture=epaleate
|receptacle architecture or pubescence or relief=smooth
|receptacle relief=foveolate
|receptacle shape=flat;convex
|series quantity=1;2
|stem orientation=erect
|stem quantity=1
|style-branch structure in adjective form=stigmatic
|tube length or size=longer
|ultimate margin shape=toothed;denticulate;toothed;denticulate;entire
|whole-organism duration=perennial;annual
|whole-organism some measurement=20cm;200cm
|x chromosome quantity=20
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae tribe Senecioneae]]