View source for Thurovia

{{Treatment/ID
|accepted_name=Thurovia
|accepted_authority=Rose
|publications={{Treatment/Publication
|title=Contr. U.S. Natl. Herb.
|place=3: 321. 1895
|year=1895
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Thurovia
|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>[[Thurovia]]</div></div>
|etymology=For naturalist and plant collector Frederick William Thurow, 1852–1952, originally from Germany, of Hockley, Texas, near Houston
|volume=Volume 20
|mention_page=page 8, 12, 87, 88, 89, 95
|treatment_page=page 86
}}<!--

--><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, 6–45 cm (eglandular; taprooted or roots spreading laterally in perennials).</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem architecture;stem pubescence"><b>Stems </b>erect, branched mostly in distal 1/2, glabrous.</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 shape;margin architecture or shape;face pubescence">blades (1-nerved) linear-filiform, margins entire, faces glabrous.</span> <span class="statement" id="st-d0_s6" data-properties="head architecture or shape;array architecture"><b>Heads </b>discoid, usually in (secund) spiciform arrays.</span> <span class="statement" id="st-d0_s7" data-properties="involucre shape;involucre length;involucre width"><b>Involucres </b>narrowly cylindro-obconic, (3–4 ×) 1.5–2 mm.</span> <span class="statement" id="st-d0_s8" data-properties="phyllarie quantity;series quantity;outermost phyllarie architecture;outermost phyllarie shape;outermost phyllarie coloration;outermost phyllarie shape;outermost phyllarie size;outermost phyllarie texture;proximal margin texture;face pubescence"><b>Phyllaries </b>5–9 in 2 series, 1-nerved (usually convex and without prominent midnerves) outermost linear-oblong and mostly green, oblong-lanceolate, subequal to unequal, white-indurate proximally, proximal margins scarious, (apices acute), faces glabrous.</span> <span class="statement" id="st-d0_s9" data-properties="receptacle prominence or shape;receptacle relief;receptacle architecture"><b>Receptacles </b>flat, shallowly pitted (glabrous), epaleate.</span> <span class="statement" id="st-d0_s10" data-properties="disc-floret quantity;disc-floret reproduction;disc-floret reproduction"><b>Disc-</b>florets 3, bisexual, fertile;</span> <span class="statement" id="st-d0_s11" data-properties="corolla coloration;corolla coloration;tube height or length or size;lobe quantity;lobe orientation;lobe shape">corollas white or pale-yellow, tubes shorter than funnelform throats, lobes 5, spreading-recurved, narrowly lanceolate (lengths 1/2 corollas);</span> <span class="statement" id="st-d0_s12" data-properties="style-branch appendage shape">style-branch appendages linear-lanceolate.</span> <span class="statement" id="st-d0_s13" data-properties="cypsela shape;cypsela shape;cypsela architecture;cypsela pubescence"><b>Cypselae </b>obconic, subterete, 4-nerved (subdermal, hardly evident), densely and evenly white-sericeous;</span> <span class="statement" id="st-d0_s14" data-properties="scale quantity;scale coloration;scale shape;scale architecture;scale architecture;series quantity">pappi persistent, of 10 silvery white, ovatelanceolate, erose or apiculate scales in 2 series.</span> <span class="statement" id="st-d0_s15" data-properties="pappus duration;x chromosome quantity">x = 5.</span><!--

-->{{Treatment/Body
|distribution=Tex.
|discussion=<p>Species 1.</p><!--
--><p>Thurovia was treated by M. A. Lane (1985) within Gutierrezia; data of Y. Suh and B. B. Simpson (1990) indicated it to be the sister group of Amphiachyris. The species is distinctive in its spiciform arrays of tiny, axillary, few-flowered, discoid heads with white corollas, densely sericeous cypselae, and pappi of scales.</p>
|tables=
|references={{Treatment/Reference
|id=lane1985a
|text=Lane, M. A. 1985. Taxonomy of Gutierrezia (Compositae: Astereae) in North America. Syst. Bot. 10: 7–28.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Thurovia
|author=Guy L. Nesom
|authority=Rose
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|illustrator=Barbara Alongi
|illustration copyright=Flora of North America Association
|distribution=Tex.
|reference=lane1985a
|publication title=Contr. U.S. Natl. Herb.
|publication year=1895
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V20_165.xml
|tribe=Asteraceae tribe Astereae
|genus=Thurovia
|array architecture=spiciform
|blade shape=linear-filiform
|corolla coloration=pale-yellow;white
|cypsela architecture=4-nerved
|cypsela pubescence=white-sericeous
|cypsela shape=subterete;obconic
|disc-floret quantity=3
|disc-floret reproduction=fertile;bisexual
|face pubescence=glabrous;glabrous
|head architecture or shape=discoid
|involucre length=[3mm;4mm
|involucre shape=cylindro-obconic
|involucre width=]1.5mm;2mm
|leaf architecture=sessile
|leaf arrangement=alternate
|leaf position=cauline
|lobe orientation=spreading-recurved
|lobe quantity=5
|lobe shape=lanceolate
|margin architecture or shape=entire
|outermost phyllarie architecture=1-nerved
|outermost phyllarie coloration=green
|outermost phyllarie shape=oblong-lanceolate;linear-oblong
|outermost phyllarie size=subequal;unequal
|outermost phyllarie texture=white-indurate
|pappus duration=persistent
|phyllarie quantity=5;9
|proximal margin texture=scarious
|receptacle architecture=epaleate
|receptacle prominence or shape=flat
|receptacle relief=pitted
|scale architecture=apiculate;erose
|scale coloration=silvery white
|scale quantity=10
|scale shape=ovatelanceolate
|series quantity=2;2
|stem architecture=branched
|stem orientation=erect
|stem pubescence=glabrous
|style-branch appendage shape=linear-lanceolate
|tube height or length or size=shorter
|whole-organism duration=perennial;annual
|whole-organism some measurement=6cm;45cm
|x chromosome quantity=5
}}<!--

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