View source for Xanthocephalum gymnospermoides

{{Treatment/ID
|accepted_name=Xanthocephalum gymnospermoides
|accepted_authority=(A. Gray) Bentham & Hooker f.
|publications={{Treatment/Publication
|title=Gen. Pl.
|place=2: 249. 1873
|year=1873
}}
|common_names=San Pedro matchweed
|basionyms={{Treatment/ID/Basionym
|name=Gutierrezia gymnospermoides
|authority=A. Gray
|publication_title=Smithsonian Contr. Knowl.
|publication_place=5(6): 79. 1853
}}
|synonyms={{Treatment/ID/Synonym
|name=Grindelia gymnospermoides
|authority=(A. Gray) Ruffin
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Xanthocephalum;Xanthocephalum gymnospermoides
|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>[[Xanthocephalum]]</div><div class="higher-taxon"><small>species</small>[[Xanthocephalum gymnospermoides]]</div></div>
|volume=Volume 20
|mention_page=
|treatment_page=page 437
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>30–150 cm, herbage glabrous. <b>Stems</b> usually 1, erect. <b>Leaf</b> blades 40–100 mm, bases narrowly decurrent, margins entire to spinulose-toothed, faces resinous. <b>Heads</b> usually in tight to loose, corymbiform arrays, rarely borne singly. <b>Peduncles</b>: ultimate 1–40 mm, minutely stipitate-glandular. <b>Phyllaries</b> minutely stipitate-glandular. <b>Ray</b> corollas 4–11 mm. <b>Pappi</b> (ray) 0, outer disc 0 or minute crowns, inner nearly 0 or minute crowns, sometimes lacerate or with awnlike scales 0.2–0.8 mm, rarely with ring of persistent, 15–20, antrorsely ciliolate bristles ca. 1.4 mm. <b>2n</b> = 12.</span><!--

-->{{Treatment/Body
|phenology=Flowering (Jul–)Aug–Oct.
|habitat=Meadows, stream bottoms, ditches, grasslands, areas of oak-pine or pine woodlands, usually in habitats at least intermittently wet
|elevation=1100–2700 m
|distribution=Ariz.;Tex.;Mexico (Chihuahua;Durango;Jalisco;Sonora;Zacatecas).
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Xanthocephalum gymnospermoides
|author=
|authority=(A. Gray) Bentham & Hooker f.
|rank=species
|parent rank=genus
|synonyms=Grindelia gymnospermoides
|basionyms=Gutierrezia gymnospermoides
|family=Asteraceae
|phenology=Flowering (Jul–)Aug–Oct.
|habitat=Meadows, stream bottoms, ditches, grasslands, areas of oak-pine or pine woodlands, usually in habitats at least intermittently wet
|elevation=1100–2700 m
|distribution=Ariz.;Tex.;Mexico (Chihuahua;Durango;Jalisco;Sonora;Zacatecas).
|reference=None
|publication title=Gen. Pl.
|publication year=1873
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V20_1000.xml
|tribe=Asteraceae tribe Astereae
|genus=Xanthocephalum
|species=Xanthocephalum gymnospermoides
}}<!--

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