View source for Eurybia avita

{{Treatment/ID
|accepted_name=Eurybia avita
|accepted_authority=(Alexander) G. L. Nesom
|publications={{Treatment/Publication
|title=Phytologia
|place=77: 259. 1995
|year=1995
}}
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Aster avitus
|authority=Alexander
|rank=species
|publication_title=Castanea
|publication_place=4: 60. 1939
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Eurybia;Eurybia avita
|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>[[Eurybia]]</div><div class="higher-taxon"><small>species</small>[[Eurybia avita]]</div></div>
|etymology=Alexander’s rock aster
|volume=Volume 20
|mention_page=page 367, 377, 379
|treatment_page=page 378
}}<!--

--><span class="statement" id="st-d0_s0" data-properties=""><b>Plants </b>30–50 (–80) cm;</span> <span class="statement" id="st-d0_s1" data-properties="whole_organism atypical some measurement;whole_organism some measurement;whole_organism architecture;whole_organism growth form">in clumps, eglandular;</span> <span class="statement" id="st-d0_s2" data-properties="rhizome height or length or size;rhizome growth form or orientation;rhizome texture">rhizomes short, creeping, ± woody in age.</span> <span class="statement" id="st-d0_s3" data-properties="stem quantity;stem orientation;stem architecture;stem course;stem size;stem fragility;stem pubescence;stem pubescence;stem pubescence"><b>Stems </b>1–5+, erect to ascending, simple, strict, slender, stiff, proximally glabrous or glabrate, distally hirtello-puberulent.</span> <span class="statement" id="st-d0_s4" data-properties="leaf position;leaf position;leaf texture;blade arrangement or course or shape;blade arrangement or course or shape;blade length;blade width;blade texture;base architecture or shape;margin architecture or shape;margin texture;margin pubescence or relief;spine size or width;apex shape;apex shape or vernation"><b>Leaves </b>basal and cauline, firm, blades (1-nerved) linear to lance-linear or oblong-linear (grasslike), 25–140+ × 2–5 mm, ± coriaceous, bases sheathing, margins entire to remotely serrulate-spinose, indurate, remotely scabrous, spines thickened, apices acute, revolute, faces glabrous;</span> <span class="statement" id="st-d0_s5" data-properties="face pubescence;face position;whole-organism position;whole-organism position;whole-organism life cycle;base condition;base architecture">basal and proximal cauline often withering by flowering, bases marcescent, ± long-petiolate;</span> <span class="statement" id="st-d0_s6" data-properties="mid and distal leaf architecture;mid and distal leaf size">mid and distal progressively sessile and reduced.</span> <span class="statement" id="st-d0_s7" data-properties="head quantity;array size or width;array shape;array architecture"><b>Heads </b>3–15+ in narrow, flat-topped corymbiform arrays.</span> <span class="statement" id="st-d0_s8" data-properties="peduncle pubescence"><b>Peduncles </b>densely hirtellous;</span> <span class="statement" id="st-d0_s9" data-properties="bract quantity">bracts 1–2, usually immediately subtending heads.</span> <span class="statement" id="st-d0_s10" data-properties="involucre shape;involucre some measurement;involucre height or length or size"><b>Involucres </b>cylindro-campanulate, 7–9 mm, shorter than pappi.</span> <span class="statement" id="st-d0_s11" data-properties="phyllarie quantity;phyllarie size;phyllarie pubescence or texture;series quantity;base texture;margin coloration;margin pubescence or relief;margin architecture or relief;margin shape;apex orientation;apex orientation;apex shape;apex shape;apex shape;apex size or width;face pubescence"><b>Phyllaries </b>30–55+ in 4–5 series, unequal, chartaceous, bases indurate, margins narrowly hyaline, scabrous, erose, fimbriate, apices appressed or reflexed, acute, sometimes acuminate (some outer), mucronate, marginally thickened, faces glabrous;</span> <span class="statement" id="st-d0_s12" data-properties="outer phyllarie shape;outer phyllarie shape;apical zone coloration;apical zone prominence or shape">outer lance-oblong, rounded, apical zones dark green, flat;</span> <span class="statement" id="st-d0_s13" data-properties="inner phyllarie shape;apical zone coloration;tip shape">inner linear-oblong, apical zones pale green, restricted to broadly acute tips.</span> <span class="statement" id="st-d0_s14" data-properties="ray-floret quantity"><b>Ray-</b>florets 8–20;</span> <span class="statement" id="st-d0_s15" data-properties="corolla coloration;corolla length;corolla width">corollas bluish white to lavender or deep violet, 5–10 × 1–1.7 mm.</span> <span class="statement" id="st-d0_s16" data-properties="disc-floret quantity"><b>Disc-</b>florets 15–45;</span> <span class="statement" id="st-d0_s17" data-properties="corolla coloration;corolla some measurement;corolla size;tube height or length or size;lobe orientation;lobe shape;lobe some measurement">corollas yellow, 5.5–7 mm, barely ampliate, tubes shorter than narrowly funnelform throats, lobes erect, triangular, 0.6–0.7 mm.</span> <span class="statement" id="st-d0_s18" data-properties="cypsela coloration;cypsela shape;cypsela shape;cypsela some measurement;rib atypical quantity;rib quantity;rib pubescence"><b>Cypselae </b>tan, fusiform, ± compressed, ca. 5 mm, ribs 7–10 (–12) (stramineous, broad), strigillose;</span> <span class="statement" id="st-d0_s19" data-properties="bristle pappus some measurement;bristle coloration">pappi of cinnamon to sordid bristles 5.5–6 mm, equaling disc corollas.</span> <span class="statement" id="st-d0_s20" data-properties="disc corolla variability;2n chromosome quantity">2n = 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering late summer–early fall.
|habitat=Shallow sandy soils around edges of granite flatrock outcrops
|elevation=100–500 m
|distribution=Ga.;N.C.;S.C.
|discussion=<p>Of conservation concern.</p><!--
--><p>Eurybia avita is known from Stone Mountain (the type location, where it is now extirpated according to R. Kral 1983, vol. 2) and granite flatrocks in Georgia, and from Pickens County in South Carolina, where it is imperiled; it is presumed extirpated from North Carolina (www.natureserve.org). Kral mapped the species; he underlined its similarities to both E. surculosa and E. paludosa and the need for further studies of its relationships.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Eurybia avita
|authority=(Alexander) G. L. Nesom
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Aster avitus
|family=Asteraceae
|phenology=Flowering late summer–early fall.
|habitat=Shallow sandy soils around edges of granite flatrock outcrops
|elevation=100–500 m
|distribution=Ga.;N.C.;S.C.
|reference=None
|publication title=Phytologia
|publication year=1995
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V20_866.xml
|tribe=Asteraceae tribe Astereae
|genus=Eurybia
|species=Eurybia avita
|2n chromosome quantity=18
|apex orientation=reflexed;appressed
|apex shape=mucronate;acuminate;acute;acute
|apex shape or vernation=revolute
|apex size or width=thickened
|apical zone coloration=pale green;dark green
|apical zone prominence or shape=flat
|array architecture=corymbiform
|array shape=flat-topped
|array size or width=narrow
|base architecture=long-petiolate
|base architecture or shape=sheathing
|base condition=marcescent
|base texture=indurate
|blade arrangement or course or shape=oblong-linear;linear;lance-linear
|blade length=25mm;140mm
|blade texture=coriaceous
|blade width=2mm;5mm
|bract quantity=1;2
|bristle coloration=cinnamon;sordid
|bristle pappus some measurement=5.5mm;6mm
|corolla coloration=yellow;bluish white;lavender or deep violet
|corolla length=5mm;10mm
|corolla size=ampliate
|corolla some measurement=5.5mm;7mm
|corolla width=1mm;1.7mm
|cypsela coloration=tan
|cypsela shape=compressed;fusiform
|cypsela some measurement=5
|disc corolla variability=equaling
|disc-floret quantity=15;45
|face position=basal
|face pubescence=glabrous;glabrous
|head quantity=3;15
|inner phyllarie shape=linear-oblong
|involucre height or length or size=shorter
|involucre shape=cylindro-campanulate
|involucre some measurement=7mm;9mm
|leaf position=cauline;basal
|leaf texture=firm
|lobe orientation=erect
|lobe shape=triangular
|lobe some measurement=0.6mm;0.7mm
|margin architecture or relief=erose
|margin architecture or shape=entire;remotely serrulate-spinose
|margin coloration=hyaline
|margin pubescence or relief=scabrous;scabrous
|margin shape=fimbriate
|margin texture=indurate
|mid and distal leaf architecture=sessile
|mid and distal leaf size=reduced
|outer phyllarie shape=rounded;lance-oblong
|peduncle pubescence=hirtellous
|phyllarie pubescence or texture=chartaceous
|phyllarie quantity=30;55
|phyllarie size=unequal
|ray-floret quantity=8;20
|rhizome growth form or orientation=creeping
|rhizome height or length or size=short
|rhizome texture=woody
|rib atypical quantity=10;12
|rib pubescence=strigillose
|rib quantity=7;10
|series quantity=4;5
|spine size or width=thickened
|stem architecture=simple
|stem course=strict
|stem fragility=stiff
|stem orientation=erect;ascending
|stem pubescence=hirtello-puberulent;glabrate;glabrous
|stem quantity=1;5
|stem size=slender
|tip shape=acute
|tube height or length or size=shorter
|whole-organism life cycle=withering
|whole-organism position=cauline;proximal
|whole_organism architecture=eglandular
|whole_organism atypical some measurement=50cm;80cm
|whole_organism growth form=plant
|whole_organism some measurement=30cm;50cm
}}<!--

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