View source for Mentzelia argillosa

{{Treatment/ID
|accepted_name=Mentzelia argillosa
|accepted_authority=J. Darlington
|publications={{Treatment/Publication
|title=Ann. Missouri Bot. Gard.
|place=21: 153. 1934
|year=1934
}}
|common_names=Arapien blazingstar
|special_status={{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Nuttallia argillosa
|authority=(J. Darlington) W. A. Weber
}}
|hierarchy=Loasaceae;Mentzelia;Mentzelia sect. Bartonia;Mentzelia argillosa
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Loasaceae]]</div><div class="higher-taxon"><small>genus</small>[[Mentzelia]]</div><div class="higher-taxon"><small>section</small>[[Mentzelia sect. Bartonia]]</div><div class="higher-taxon"><small>species</small>[[Mentzelia argillosa]]</div></div>
|volume=Volume 12
|mention_page=page 499
|treatment_page=page 507
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial, bushlike, with subterranean caudices. <b>Stems</b> multiple, erect, zigzag or straight; branches distal or along entire stem, distal longest or all ± equal, antrorse, straight; hairy. <b>Leaves</b>: blade 15.4–40(–86) × 4–12.2 mm, always some more than 10 mm wide, widest intersinus distance 4–12.2 mm; proximal oblanceolate to spatulate, margins usually entire, rarely dentate, teeth 0(–4), perpendicular to leaf axis, 0.1–1 mm; distal oblanceolate, spatulate, or elliptic, base not clasping, margins usually entire, rarely dentate, teeth 0(–4), perpendicular to leaf axis, 0.3–1.4 mm; abaxial surface with simple grappling-hook, complex grappling-hook, and needlelike trichomes, adaxial surface with simple grappling-hook and needlelike trichomes. <b>Bracts</b>: margins entire. <b>Flowers</b>: petals golden yellow, 8.2–12.2(–15.2) × 2.4–5 mm, apex acute, glabrous abaxially; stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 5.6–11(–13.5) × 1.4–3 mm, with anthers, second whorl with anthers; anthers usually twisted after dehiscence, epidermis papillate; styles 5.5–9.4 mm. <b>Capsules</b> cup-shaped, 5–8.4 × 3.1–6 mm, base tapering to rounded, not longitudinally ridged. <b>Seeds</b>: coat anticlinal cell walls straight, papillae 3–5 per cell. <b>2n</b> = 22.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=Sparsely vegetated steep cliffs or slopes composed of gypsum-rich clayey and gravelly soils.
|elevation=1600–1900 m.
|distribution=Utah.
|discussion=<p><i>Mentzelia argillosa</i> is endemic to the Arapien Shale formation in Sevier and Sanpete counties.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Mentzelia argillosa
|author=
|authority=J. Darlington
|rank=species
|parent rank=section
|synonyms=Nuttallia argillosa
|basionyms=
|family=Loasaceae
|phenology=Flowering Jun–Aug.
|habitat=Sparsely vegetated steep cliffs or slopes composed of gypsum-rich clayey and gravelly soils.
|elevation=1600–1900 m.
|distribution=Utah.
|reference=None
|publication title=Ann. Missouri Bot. Gard.
|publication year=1934
|special status=Selected by author to be illustrated;Endemic;Conservation concern
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V12/V12_716.xml
|genus=Mentzelia
|section=Mentzelia sect. Bartonia
|species=Mentzelia argillosa
}}<!--

-->[[Category:Treatment]][[Category:Mentzelia sect. Bartonia]]