View source for Stevia

{{Treatment/ID
|accepted_name=Stevia
|accepted_authority=Cavanilles
|publications={{Treatment/Publication
|title=Icon.
|place=4: 32, plates 354, 355. 1797
|year=1797
}}
|common_names=Candyleaf
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Eupatorieae;Stevia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Eupatorieae]]</div><div class="higher-taxon"><small>genus</small>[[Stevia]]</div></div>
|etymology=For Pedro Jaime Esteve (Stevius), d. 1556, noted medical practitioner and botany professor of Valencia, Spain
|volume=Volume 21
|mention_page=page 459, 485
|treatment_page=page 483
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole-organism duration;whole-organism duration;whole_organism some measurement;whole_organism growth form;whole_organism growth form"><b>Annuals,</b> perennials, subshrubs, or shrubs, 50–120+ cm.</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem architecture"><b>Stems </b>erect, usually branched.</span> <span class="statement" id="st-d0_s2" data-properties=""><b>Leaves </b>cauline;</span> <span class="statement" id="st-d0_s3" data-properties="">all or mostly opposite or mostly alternate;</span> <span class="statement" id="st-d0_s4" data-properties="leaf position;leaf arrangement;leaf arrangement;leaf architecture;leaf architecture">petiolate or sessile;</span> <span class="statement" id="st-d0_s5" data-properties="blade architecture;blade architecture;blade shape;blade shape;blade arrangement or shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;margin architecture or shape;margin architecture or shape;margin shape;margin shape;margin shape;margin shape;face pubescence;face pubescence;face pubescence;face pubescence;face pubescence;face pubescence">blades 1-nerved or 3-nerved, deltate, lanceolate, lance-elliptic, lance-linear, elliptic-oblong, linear, ovate, or trullate, margins entire or serrate, serrulate, or toothed, faces hirtellous, puberulent, glabrescent, or glabrous (sometimes shiny), sometimes glanddotted.</span> <span class="statement" id="st-d0_s6" data-properties="head architecture or shape"><b>Heads </b>discoid, in loose to dense, corymbiform arrays.</span> <span class="statement" id="st-d0_s7" data-properties="involucre shape;involucre diameter;involucre diameter"><b>Involucres </b>± cylindric, (1–) 2–3 mm diam.</span> <span class="statement" id="st-d0_s8" data-properties="phyllary duration;phyllary atypical quantity;phyllary quantity;phyllary quantity;phyllary architecture;phyllary shape;phyllary variability"><b>Phyllaries </b>persistent, 5 (–6) in ± 1 series, 2–3-nerved, ovate or oblong to lanceolate or linear, ± equal (herbaceous).</span> <span class="statement" id="st-d0_s9" data-properties="receptacle shape;receptacle shape;receptacle architecture"><b>Receptacles </b>flat or convex, epaleate.</span> <span class="statement" id="st-d0_s10" data-properties="floret atypical quantity;floret quantity"><b>Florets </b>5 (–6);</span> <span class="statement" id="st-d0_s11" data-properties="corolla coloration">corollas purple to pink or white, throats narrowly funnelform (lengths 3–4 times diams., ± hirtellous inside);</span> <span class="statement" id="st-d0_s12" data-properties="base size;base pubescence;branch shape">styles: bases sometimes enlarged, glabrous (sometimes papillose), branches filiform.</span> <span class="statement" id="st-d0_s13" data-properties="cypsela shape;cypsela architecture or shape;cypsela relief"><b>Cypselae </b>columnar to prismatic or fusiform, 5-ribbed, glanddotted and/or scabrellous;</span> <span class="statement" id="st-d0_s14" data-properties="scale quantity;scale shape;scale atypical quantity;scale quantity">pappi (sometimes ± vestigial on 1–2 cypselae of each head) persistent, of 5, (distinct or connate) muticous scales plus 0–5 [–30+] subulate-aristate to setiform scales or bristles.</span> <span class="statement" id="st-d0_s15" data-properties="pappus duration;pappus shape;x chromosome quantity;x chromosome quantity;x chromosome quantity">x = 11, 12, 17.</span><!--

-->{{Treatment/Body
|distribution=w United States;Mexico;Central America;South America
|discussion=<p>Species ca. 240 (7 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=grashoff1972a
|text=Grashoff, J. L. 1972. A Systematic Study of the North and Central American Species of Stevia. Ph.D. dissertation. University of Texas.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Annuals
|[[Stevia micrantha|Stevia micrantha]]
|-id=key-0-1
|1
|Perennials, subshrubs, or shrubs.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Subshrubs or shrubs
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Perennials
|[[#key-0-4| > 4]]
|-id=key-0-3
|3
|Phyllaries densely stipitate-glandular and sparsely villous to hispid; corolla lobeshispidulous
|[[Stevia lemmonii|Stevia lemmonii]]
|-id=key-0-3
|3
|Phyllaries glabrous, usually viscid-shiny (from resinous exudate of ± evident sunken glands), not villous or hispid; corolla lobes glabrous
|[[Stevia salicifolia|Stevia salicifolia]]
|-id=key-0-4
|4
|Leaves mostly opposite, blades lanceolate, lance-ovate, oblanceolate, ovate, or trullate; phyllary apices rounded to blunt or obtuse; pappi usually shorter than corollas (sometimes coroniform)
|[[#key-0-5| > 5]]
|-id=key-0-4
|4
|Leaves mostly alternate (often with abundant axillary clusters of smaller leaves), blades lance-linear, linear, linear-oblong, narrowly oblanceolate, or oblong; phyllary apices acute to acuminate; pappi usually equaling corollas (sometimes coroniform or 0)
|[[#key-0-6| > 6]]
|-id=key-0-5
|5
|Leaves petiolate (raised venation usually including only midvein and primary laterals); involucres 4–5.5(–6) mm
|[[Stevia ovata|Stevia ovata]]
|-id=key-0-5
|5
|Leaves sessile or nearly so (raised venation reticulate, including secondary andtertiary veins); involucres (5.5–)6–8.5 mm
|[[Stevia plummerae|Stevia plummerae]]
|-id=key-0-6
|6
|Heads in ± congested, compact clusters; peduncles 0 or 1–4 mm; involucres 5–6(–7)mm; phyllaries sessile-glandular, sparsely villosulous
|[[Stevia serrata|Stevia serrata]]
|-id=key-0-6
|6
|Heads borne in open, subcorymbiform arrays; peduncles mostly 5–30 mm; involucres 6–8 mm; phyllaries sessile- and stipitate-glandular (not villous)
|[[Stevia viscida|Stevia viscida]]
|}
</div></div><!--

-->{{#Taxon:
name=Stevia
|author=Guy L. Nesom
|authority=Cavanilles
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=w United States;Mexico;Central America;South America
|reference=grashoff1972a
|publication title=Icon.
|publication year=1797
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21_1214.xml
|tribe=Asteraceae tribe Eupatorieae
|genus=Stevia
|base pubescence=glabrous
|base size=enlarged
|blade architecture=3-nerved;1-nerved
|blade arrangement or shape=lance-elliptic
|blade shape=trullate;ovate;trullate;ovate;linear;elliptic-oblong;lance-linear;lanceolate;deltate
|branch shape=filiform
|corolla coloration=purple;pink or white
|cypsela architecture or shape=5-ribbed
|cypsela relief=scabrellous
|cypsela shape=columnar;prismatic or fusiform
|face pubescence=glabrous;glabrescent;glabrous;glabrescent;puberulent;hirtellous
|floret atypical quantity=5;6
|floret quantity=5
|head architecture or shape=discoid
|involucre diameter=2mm;3mm
|involucre shape=cylindric
|leaf architecture=sessile;petiolate
|leaf arrangement=alternate;opposite
|leaf position=cauline
|margin architecture or shape=serrate;entire
|margin shape=toothed;serrulate;toothed;serrulate
|pappus duration=persistent
|pappus shape=subulate-aristate;setiform
|phyllary architecture=2-3-nerved
|phyllary atypical quantity=5;6
|phyllary duration=persistent
|phyllary quantity=1;5
|phyllary shape=oblong;lanceolate or linear
|phyllary variability=equal
|receptacle architecture=epaleate
|receptacle shape=convex;flat
|scale atypical quantity=5;30
|scale quantity=0;5
|scale shape=muticous
|stem architecture=branched
|stem orientation=erect
|whole-organism duration=perennial;annual
|whole_organism growth form=shrub;subshrub
|whole_organism some measurement=50cm;120cm
|x chromosome quantity=17;12;11
}}<!--

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