View source for Mentzelia chrysantha

{{Treatment/ID
|accepted_name=Mentzelia chrysantha
|accepted_authority=Engelmann
|publications={{Treatment/Publication
|title=Bull. U.S. Geol. Geogr. Surv. Territ.
|place=2: 237. 1876
|year=1876
}}
|common_names=Golden blazingstar
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Nuttallia chrysantha
|authority=(Engelmann) Greene
}}
|hierarchy=Loasaceae;Mentzelia;Mentzelia sect. Bartonia;Mentzelia chrysantha
|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 chrysantha]]</div></div>
|volume=Volume 12
|mention_page=page 502
|treatment_page=page 523
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>biennial, bushlike or candelabra-form. <b>Stems</b> solitary, erect, straight; branches distal or along entire stem, distal or proximal longest, antrorse, straight; hairy. <b>Leaves</b>: blade 38–113 × 8–20.5(–25.2) mm, widest intersinus distance 5.4–12.8 mm; proximal oblanceolate, lanceolate, or elliptic, margins serrate to pinnate, teeth or lobes 14–22, slightly antrorse, 0.6–4.6 mm; distal elliptic or lanceolate, base not clasping, margins serrate to pinnate, teeth or lobes 6–22, slightly antrorse, 0.6–4 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 toothed. <b>Flowers</b>: petals light to golden yellow, 12.5–21.4 × 3.8–6.7 mm, apex acute to rounded, glabrous abaxially; stamens light to golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 11.5–18.6 × 2–5.8 mm, without anthers, second whorl with anthers; anthers straight after dehiscence, epidermis smooth; styles 8.1–13.1 mm. <b>Capsules</b> cup-shaped to cylindric, 9.4–16 × 5.1–7.7 mm, base tapering, not longitudinally ridged. <b>Seeds</b>: coat anticlinal cell walls sinuous, papillae 29–35 per cell. <b>2n</b> = 20.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jul–Sep.
|habitat=Steep hillsides, washes, clayey soils, sometimes rich in gypsum.
|elevation=1600–1900 m.
|distribution=Colo.
|discussion=<p><i>Mentzelia chrysantha</i> occurs in Custer and Fremont counties.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Mentzelia chrysantha
|author=
|authority=Engelmann
|rank=species
|parent rank=section
|synonyms=Nuttallia chrysantha
|basionyms=
|family=Loasaceae
|phenology=Flowering Jul–Sep.
|habitat=Steep hillsides, washes, clayey soils, sometimes rich in gypsum.
|elevation=1600–1900 m.
|distribution=Colo.
|reference=None
|publication title=Bull. U.S. Geol. Geogr. Surv. Territ.
|publication year=1876
|special status=Endemic;Conservation concern
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V12/V12_553.xml
|genus=Mentzelia
|section=Mentzelia sect. Bartonia
|species=Mentzelia chrysantha
}}<!--

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