View source for Chrysoma

{{Treatment/ID
|accepted_name=Chrysoma
|accepted_authority=Nuttall
|publications={{Treatment/Publication
|title=J. Acad. Nat. Sci. Philadelphia
|place=7: 67. 1834
|year=1834
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Chrysoma
|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>[[Chrysoma]]</div></div>
|etymology=Greek chrysos, gold, and - ome, having the condition of; alluding to predominantly yellow-gold heads and corymbs
|volume=Volume 20
|mention_page=page 5, 96, 108
|treatment_page=page 105
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism some measurement;whole_organism pubescence;whole_organism coating;whole_organism growth form"><b>Shrubs,</b> 50–100 cm (evergreen), glabrous, resinous.</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem architecture"><b>Stems </b>erect, 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="">alternate;</span> <span class="statement" id="st-d0_s4" data-properties="leaf position;leaf arrangement;leaf architecture">sessile;</span> <span class="statement" id="st-d0_s5" data-properties="blade architecture;blade shape;margin architecture or shape;face coloration;face coating">blades 1-nerved, oblanceolate to narrowly elliptic (bases sometimes attenuate), margins entire, faces gland-dotted, resinous (covered by reticulum of subisodiametric areoles, each areole surrounded by sunken border).</span> <span class="statement" id="st-d0_s6" data-properties="head architecture or arrangement;head architecture or shape;array density;array architecture"><b>Heads </b>usually radiate, sometimes discoid, in dense (terminal), cymiform arrays.</span> <span class="statement" id="st-d0_s7" data-properties="involucre shape;involucre length;involucre width"><b>Involucres </b>cylindric, (5–6 ×) 2–2.5 mm.</span> <span class="statement" id="st-d0_s8" data-properties="phyllarie quantity;phyllarie orientation;phyllarie architecture or fragility;phyllarie architecture;phyllarie shape;phyllarie size;series atypical quantity;series quantity;margin texture"><b>Phyllaries </b>8–12 in 3–4 (–5) series (in vertical ranks), erect, loose, stamineous, 1-nerved (midnerves orange-resinous from bases to apices; flat), lanceolate, unequal, margins scarious.</span> <span class="statement" id="st-d0_s9" data-properties="receptacle prominence or shape;receptacle relief;receptacle architecture"><b>Receptacles </b>flat, shallowly pitted, epaleate.</span> <span class="statement" id="st-d0_s10" data-properties="ray-floret atypical quantity;ray-floret atypical quantity;ray-floret quantity;ray-floret architecture;ray-floret reproduction"><b>Ray-</b>florets (0–) 1–2 (–3), pistillate, fertile;</span> <span class="statement" id="st-d0_s11" data-properties="corolla coloration">corollas yellow.</span> <span class="statement" id="st-d0_s12" data-properties="disc-floret atypical quantity;disc-floret atypical quantity;disc-floret quantity;disc-floret reproduction;disc-floret reproduction"><b>Disc-</b>florets (2–) 3–4 (–5), bisexual, fertile;</span> <span class="statement" id="st-d0_s13" data-properties="corolla coloration;corolla shape;tube length or size;lobe quantity;lobe orientation;lobe shape">corollas yellow, tubular-funnelform, tubes longer than throats, lobes 5, spreading-recurving, lanceolate;</span> <span class="statement" id="st-d0_s14" data-properties="style-branch appendage shape">style-branch appendages linear-triangular (closely papillate).</span> <span class="statement" id="st-d0_s15" data-properties="cypsela shape;cypsela shape;cypsela architecture or shape;cypsela pubescence"><b>Cypselae </b>(brownish) turbinate-oblong, nearly terete, 8–10-ribbed, densely strigoso-sericeous;</span> <span class="statement" id="st-d0_s16" data-properties="bristle quantity;bristle coloration;bristle size;bristle architecture;bristle shape;series quantity">pappi persistent, of 40–60 tan, unequal, barbellate, apically attenuate bristles in 2–3 series.</span> <span class="statement" id="st-d0_s17" data-properties="pappus duration;x chromosome quantity">x = 9.</span><!--

-->{{Treatment/Body
|distribution=se United States
|discussion=<p>Species 1.</p><!--
--><p>Chrysoma pauciflosculosa was originally described within Solidago; it is distinct in anatomy (F. E. Lloyd 1901; K. Phillips 1963; L. C. Anderson and J. B. Creech 1975) and other features. Chrysoma is recognized by its shrubby habit, areolate-resinous leaves, corymbiform arrays of glomerate, cylindric, few-flowered heads, long disc corolla lobes, and papillate style-branch appendages.</p>
|tables=
|references={{Treatment/Reference
|id=lloyd1901a
|text=Lloyd, F. E. 1901. Some points in the anatomy of Chrysoma pauciflosculosa. Bull. Torrey Bot. Club 28: 445–450.
}}{{Treatment/Reference
|id=phillips1963a
|text=Phillips, K. 1963. A Taxonomic and Morphological Study of Chrysoma pauciflosculosa (Michx.) Greene. M.S. thesis. University of South Carolina.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Chrysoma
|author=Guy L. Nesom
|authority=Nuttall
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|illustrator=Barbara Alongi
|illustration copyright=Flora of North America Association
|distribution=se United States
|reference=lloyd1901a;phillips1963a
|publication title=J. Acad. Nat. Sci. Philadelphia
|publication year=1834
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V20_206.xml
|tribe=Asteraceae tribe Astereae
|genus=Chrysoma
|array architecture=cymiform
|array density=dense
|blade architecture=1-nerved
|blade shape=oblanceolate;narrowly elliptic
|bristle architecture=barbellate
|bristle coloration=tan
|bristle quantity=40;60
|bristle shape=attenuate
|bristle size=unequal
|corolla coloration=yellow;yellow
|corolla shape=tubular-funnelform
|cypsela architecture or shape=8-10-ribbed
|cypsela pubescence=strigoso-sericeous
|cypsela shape=terete;turbinate-oblong
|disc-floret atypical quantity=4;5
|disc-floret quantity=3;4
|disc-floret reproduction=fertile;bisexual
|face coating=resinous
|face coloration=gland-dotted
|head architecture or arrangement=radiate
|head architecture or shape=discoid
|involucre length=[5mm;6mm
|involucre shape=cylindric
|involucre width=]2mm;2.5mm
|leaf architecture=sessile
|leaf arrangement=alternate
|leaf position=cauline
|lobe orientation=spreading-recurving
|lobe quantity=5
|lobe shape=lanceolate
|margin architecture or shape=entire
|margin texture=scarious
|pappus duration=persistent
|phyllarie architecture=1-nerved
|phyllarie architecture or fragility=loose
|phyllarie orientation=erect
|phyllarie quantity=8;12
|phyllarie shape=lanceolate
|phyllarie size=unequal
|ray-floret architecture=pistillate
|ray-floret atypical quantity=2;3
|ray-floret quantity=1;2
|ray-floret reproduction=fertile
|receptacle architecture=epaleate
|receptacle prominence or shape=flat
|receptacle relief=pitted
|series atypical quantity=4;5
|series quantity=2;3
|stem architecture=branched
|stem orientation=erect
|style-branch appendage shape=linear-triangular
|tube length or size=longer
|whole_organism coating=resinous
|whole_organism growth form=shrub
|whole_organism pubescence=glabrous
|whole_organism some measurement=50cm;100cm
|x chromosome quantity=9
}}<!--

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