View source for Gutierrezia sphaerocephala

{{Treatment/ID
|accepted_name=Gutierrezia sphaerocephala
|accepted_authority=A. Gray
|publications={{Treatment/Publication
|title=Mem. Amer. Acad. Arts, n. s.
|place=4: 73. 1849
|year=1849
}}
|common_names=Round-leaf snakeweed
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Gutierrezia eriocarpa
|authority=A. Gray
|rank=species
}} {{Treatment/ID/Synonym
|name=Xanthocephalum sphaerocephalum
|authority=(A. Gray) Shinners
|rank=species
}} {{Treatment/ID/Synonym
|name=Xanthocephalum sphaerocephalum var. eriocarpum
|authority=(A. Gray) Shinners
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Gutierrezia;Gutierrezia sphaerocephala
|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>[[Gutierrezia]]</div><div class="higher-taxon"><small>species</small>[[Gutierrezia sphaerocephala]]</div></div>
|volume=Volume 20
|mention_page=page 89
|treatment_page=page 92
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> 20–50 cm. <b>Stems</b> minutely, prominently, often sparsely, papillate-scabrous (hairs triangular or deltate to lanceolate, less than 0.1 mm). <b>Leaves</b>: proximal usually absent at flowering; cauline blades 1-nerved, linear, 0.5–1.2 mm wide, little reduced distally. <b>Heads</b> in loose arrays. <b>Involucres</b> campanulate, 2.5–5 mm diam. <b>Phyllary</b> apices flat. <b>Ray</b> florets 10–15; corollas yellow, 3–5.5 mm. <b>Disc</b> florets 18–37. <b>Cypselae</b> 0.9–1.2(–1.4) mm, faces without oil cavities, densely strigoso-sericeous in rows (hairs appressed to spreading, apices clavate); pappi of 1 series of narrowly triangular or narrowly oblong scales 0.2–1 mm (distinct or basally connate 1/4–3/4 their lengths, usually shorter in rays). <b>2n</b> = 8 (10).</span><!--

-->{{Treatment/Body
|phenology=Flowering (Feb–)May–Dec.
|habitat=Grasslands, roadsides, lake edges, alkaline flats with Atriplex, oak-pine-juniper woodlands, often over gypsum or limestone
|elevation=(200–)1300–2000 m
|distribution=Ariz.;N.Mex.;Tex.;Mexico (Chihuahua;Coahuila;Durango;Nuevo León;San Luis Potosí;Tamaulipas;Zacatecas).
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Gutierrezia sphaerocephala
|authority=A. Gray
|rank=species
|parent rank=genus
|synonyms=Gutierrezia eriocarpa;Xanthocephalum sphaerocephalum;Xanthocephalum sphaerocephalum var. eriocarpum
|basionyms=
|family=Asteraceae
|phenology=Flowering (Feb–)May–Dec.
|habitat=Grasslands, roadsides, lake edges, alkaline flats with Atriplex, oak-pine-juniper woodlands, often over gypsum or limestone
|elevation=(200–)1300–2000 m
|distribution=Ariz.;N.Mex.;Tex.;Mexico (Chihuahua;Coahuila;Durango;Nuevo León;San Luis Potosí;Tamaulipas;Zacatecas).
|reference=None
|publication title=Mem. Amer. Acad. Arts, n. s.
|publication year=1849
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V20_176.xml
|tribe=Asteraceae tribe Astereae
|genus=Gutierrezia
|species=Gutierrezia sphaerocephala
}}<!--

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