View source for Conyza floribunda

{{Treatment/ID
|accepted_name=Conyza floribunda
|accepted_authority=Kunth in A. von Humboldt et al.
|publications={{Treatment/Publication
|title=in A. von Humboldt et al., Nov. Gen. Sp.
|place=4(fol.): 57. 1818
|year=1818
}}, {{Treatment/Publication
|place=4(qto.): 73. 1820
|year=1820
}}
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Conyza bilbaoana
|authority=Remy
|rank=species
}} {{Treatment/ID/Synonym
|name=Conyza bonariensis var. leiotheca
|authority=(S. F. Blake) Cuatrecasas
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Conyza;Conyza floribunda
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Astereae]]</div><div class="higher-taxon"><small>genus</small>[[Conyza]]</div><div class="higher-taxon"><small>species</small>[[Conyza floribunda]]</div></div>
|volume=Volume 20
|mention_page=page 349
|treatment_page=page 350
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism orientation;whole_organism some measurement;whole_organism architecture;whole_organism growth form"><b>Plants </b>erect, 30–150+ cm, branched mostly distally.</span> <span class="statement" id="st-d0_s1" data-properties="face pubescence"><b>Leaves:</b> faces sparsely strigose to hispidulous or glabrate (margins ± ciliolate proximally, hairs erect, on nerves);</span> <span class="statement" id="st-d0_s2" data-properties="proximal leaf shape;proximal leaf length;proximal leaf width;proximal leaf shape;proximal leaf shape">proximal narrowly oblanceolate to linear, 50–100 × 5–15 mm, toothed or entire;</span> <span class="statement" id="st-d0_s3" data-properties="distal leaf size;distal leaf architecture or shape">distal similar, smaller, entire.</span> <span class="statement" id="st-d0_s4" data-properties="array architecture;array architecture"><b>Heads </b>in paniculiform or corymbiform arrays.</span> <span class="statement" id="st-d0_s5" data-properties="involucre some measurement"><b>Involucres </b>3–4 mm.</span> <span class="statement" id="st-d0_s6" data-properties="phyllarie pubescence;outer phyllarie coloration;outer phyllarie coloration;outer phyllarie shape;outer phyllarie height or length or size;inner phyllarie coloration;inner phyllarie shape"><b>Phyllaries </b>usually sparsely strigose (at least the outer; margins chartaceous to scarious), outer greenish, becoming reddish-brown, lanceolate, shorter, inner stramineous to reddish, lance-attenuate.</span> <span class="statement" id="st-d0_s7" data-properties="receptacle diameter"><b>Receptacles </b>1–2+ mm diam. in fruit.</span> <span class="statement" id="st-d0_s8" data-properties="floret architecture;floret quantity"><b>Pistillate </b>florets 30–40+;</span> <span class="statement" id="st-d0_s9" data-properties="corolla variability;corolla variability;lamina presence;lamina quantity">corollas ± equaling or surpassing styles, laminae 0 or to 0.3 mm.</span> <span class="statement" id="st-d0_s10" data-properties="disc-floret quantity"><b>Disc-</b>florets 10–20+.</span> <span class="statement" id="st-d0_s11" data-properties="cypsela coloration;cypsela some measurement;face pubescence;face pubescence"><b>Cypselae </b>pale tan (usually some with reddish nerves), 1–1.5 mm, faces sparsely strigillose or glabrate;</span> <span class="statement" id="st-d0_s12" data-properties="bristle quantity;bristle coloration;bristle some measurement;2n chromosome quantity">pappi of 15–25 white bristles 2–3 mm. <b>2n</b> = 18;</span> <span class="statement" id="st-d0_s13" data-properties="pappus quantity;pappus quantity">54 or 56.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall.
|habitat=Disturbed sites
|elevation=10–100 m
|distribution=Calif.;Fla.;Mexico;Central America;South America;Europe;Asia;Africa
|introduced=true
|discussion=<p>Conyza floribunda is thought to be native to South America.</p><!--
--><p>In some floras of the past 50 or so years, Conyza bilbaoana has been treated as distinct from C. floribunda; in others, C. bilbaoana and C. floribunda have been treated as synonyms of C. bonariensis. For some traits (e.g., indument, phyllaries, florets), members of C. floribunda are intermediate to C. bonariensis and C. canadensis; some specimens that I have called C. floribunda may be hybrids. For example, a robust specimen from Santa Cruz Island, California, was originally labeled “C. bonariensis ×canadensis (?).” Locally (e.g., in Berkeley, California), C. canadensis usually comes into flower as C. bonariensis goes to seed. So far as sampled, C. canadensis is diploid; C. bonariensis is hexaploid. Pollen stainability in the Santa Cruz Island specimen is ca. 99%.</p><!--
--><p>If treated as a variety of Conyza bonariensis, the correct name for the taxon treated here as C. floribunda is C. bonariensis var. leiotheca.</p><!--
--><p>Some botanists, e.g., J. B. Marshall (1974), have treated the nomenclatural types of Conyza floribunda and C. sumatrensis (Retzius) E. Walker (= Erigeron sumatrensis Retzius) as conspecific.</p>
|tables=
|references={{Treatment/Reference
|id=marshall1974a
|text=Marshall, J. B. 1974. A note on Conyza sumatrensis (Retz.) E. Walker (C. floribunda). Watsonia 10: 166–167.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Conyza floribunda
|authority=Kunth in A. von Humboldt et al.
|rank=species
|parent rank=genus
|synonyms=Conyza bilbaoana;Conyza bonariensis var. leiotheca
|basionyms=
|family=Asteraceae
|phenology=Flowering summer–fall.
|habitat=Disturbed sites
|elevation=10–100 m
|distribution=Calif.;Fla.;Mexico;Central America;South America;Europe;Asia;Africa
|introduced=true
|reference=marshall1974a
|publication title=in A. von Humboldt et al., Nov. Gen. Sp.;
|publication year=1818;1820
|special status=Introduced
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V20_805.xml
|tribe=Asteraceae tribe Astereae
|genus=Conyza
|species=Conyza floribunda
|2n chromosome quantity=18
|array architecture=corymbiform;paniculiform
|bristle coloration=white
|bristle quantity=15;25
|bristle some measurement=2mm;3mm
|corolla variability=surpassing styles;equaling
|cypsela coloration=pale tan
|cypsela some measurement=1mm;1.5mm
|disc-floret quantity=10;20
|distal leaf architecture or shape=entire
|distal leaf size=smaller
|face pubescence=glabrate;strigillose;sparsely strigose;hispidulous or glabrate
|floret architecture=pistillate
|floret quantity=30;40
|inner phyllarie coloration=stramineous;reddish
|inner phyllarie shape=lance-attenuate
|involucre some measurement=3mm;4mm
|lamina presence=absent
|lamina quantity=0-0.3 mm
|outer phyllarie coloration=reddish-brown;greenish
|outer phyllarie height or length or size=shorter
|outer phyllarie shape=lanceolate
|pappus quantity=56;54
|phyllarie pubescence=strigose
|proximal leaf length=50mm;100mm
|proximal leaf shape=entire;toothed;narrowly oblanceolate;linear
|proximal leaf width=5mm;15mm
|receptacle diameter=1mm;2mm
|whole_organism architecture=branched
|whole_organism growth form=plant
|whole_organism orientation=erect
|whole_organism some measurement=30cm;150cm
}}<!--

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