View source for Grindelia arizonica

{{Treatment/ID
|accepted_name=Grindelia arizonica
|accepted_authority=A. Gray
|publications={{Treatment/Publication
|title=Proc. Amer. Acad. Arts
|place=17: 208. 1881
|year=1881
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Grindelia arizonica var. dentata
|authority=Steyermark
}}{{Treatment/ID/Synonym
|name=Grindelia arizonica var. microphylla
|authority=Steyermark
}}{{Treatment/ID/Synonym
|name=Grindelia arizonica var. neomexicana
|authority=(Wooton & Standley) G. L. Nesom
}}{{Treatment/ID/Synonym
|name=Grindelia arizonica var. stenophylla
|authority=Steyermark
}}{{Treatment/ID/Synonym
|name=Grindelia laciniata
|authority=unknown
}}{{Treatment/ID/Synonym
|name=Grindelia neomexicana
|authority=unknown
}}{{Treatment/ID/Synonym
|name=Grindelia scabra var. neomexicana
|authority=(Wooton & Standley) Steyermark
}}
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Grindelia;Grindelia arizonica
|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>[[Grindelia]]</div><div class="higher-taxon"><small>species</small>[[Grindelia arizonica]]</div></div>
|volume=Volume 20
|mention_page=page 428, 429
|treatment_page=page 435
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> (10–)25–70 cm. <b>Stems</b> erect, stramineous to reddish, glabrous. <b>Cauline</b> leaf blades oblong, spatulate, or oblanceolate to linear, 15–45(–85) mm, lengths mostly 3–8 times widths, bases ± cuneate, margins serrate (teeth from bases to apices or mostly toward apices, apiculate to setose), entire, or (proximal leaves) pinnately lobed to coarsely toothed, apices acute, faces glabrous (or scabridulous near margins), sparsely, or not at all, gland-dotted. <b>Heads</b> usually in corymbiform to paniculiform arrays, rarely borne singly. <b>Involucres</b> usually campanulate to obconic, sometimes hemispheric, 4–11 × 8–17 mm. <b>Phyllaries</b> in 4–6 series, linear to ± lanceolate, usually appressed, sometimes weakly reflexed or spreading, apices slightly recurved to straight, subulate or acuminate to deltate, slightly to strongly resinous. <b>Ray</b> florets 0 or 8–26; laminae (5–)7–10 mm. <b>Cypselae</b> stramineous to brown, 2.5–4 mm, apices coronate or knobby, faces striate to furrowed; pappi of 2–4 straight or weakly contorted, smooth setiform awns or subulate scales 2–5 mm, shorter than disc corollas. <b>2n</b> = 12.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Sep(–Oct).
|habitat=Open, rocky slopes, mesas, ridges, canyons, fields, stream banks
|elevation=(300–)1500–2500 m
|distribution=Ariz.;Colo.;N.Mex.;Tex.;Utah;Mexico (Chihuahua;Coahuila).
|discussion=<p>Plants of Grindelia arizonica with ± hemispheric involucres and apices of phyllaries ± subulate (versus lance-acuminate to deltate) have been called var. neomexicana (or G. neomexicana). Plants known as var. stenophylla differ from typical G. arizonica in having leaf margins toothed mostly toward apices (versus toothed from bases to apices). Plants of G. arizonica (from northern Arizona, southwestern Colorado, and southeastern Utah) with leaf margins pinnately lobed to ± laciniate or coarsely dentate have been called G. laciniata. Some herbarium specimens that have been identified as G. aphanactis (see 4. G. squarrosa) appear to be discoid plants of G. arizonica. Hybrids between G. arizonica and G. squarrosa have been recorded from Colorado and Utah.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Grindelia arizonica
|author=
|authority=A. Gray
|rank=species
|parent rank=genus
|synonyms=Grindelia arizonica var. dentata;Grindelia arizonica var. microphylla;Grindelia arizonica var. neomexicana;Grindelia arizonica var. stenophylla;Grindelia laciniata;Grindelia neomexicana;Grindelia scabra var. neomexicana
|basionyms=
|family=Asteraceae
|phenology=Flowering Jun–Sep(–Oct).
|habitat=Open, rocky slopes, mesas, ridges, canyons, fields, stream banks
|elevation=(300–)1500–2500 m
|distribution=Ariz.;Colo.;N.Mex.;Tex.;Utah;Mexico (Chihuahua;Coahuila).
|reference=None
|publication title=Proc. Amer. Acad. Arts
|publication year=1881
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V20_997.xml
|tribe=Asteraceae tribe Astereae
|genus=Grindelia
|species=Grindelia arizonica
}}<!--

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