View source for Mentzelia mexicana

{{Treatment/ID
|accepted_name=Mentzelia mexicana
|accepted_authority=H. J. Thompson & Zavortink
|publications={{Treatment/Publication
|title=Wrightia
|place=4: 21. 1968
|year=1968
}}
|common_names=Mexico blazingstar
|basionyms=
|synonyms=
|hierarchy=Loasaceae;Mentzelia;Mentzelia sect. Bartonia;Mentzelia mexicana
|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 mexicana]]</div></div>
|volume=Volume 12
|mention_page=page 501, 502
|treatment_page=page 521
}}<!--

--><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, upcurved; hairy. <b>Leaves</b>: blade 24–82 × 11.7–29.1 mm, widest intersinus distance 3.4–19 mm; proximal oblanceolate or elliptic, margins dentate, serrate, or pinnate, teeth or lobes 6–16, slightly antrorse or perpendicular to leaf axis, 1.4–5.1 mm; distal elliptic to lanceolate, base usually not clasping, sometimes a few clasping, margins dentate, serrate, or pinnate, teeth or lobes 6–12, slightly antrorse or perpendicular to leaf axis, 2.5–6.7 mm; abaxial surface with simple grappling-hook, complex grappling-hook, and usually needlelike trichomes, adaxial surface with simple grappling-hook and needlelike trichomes. <b>Bracts</b>: margins entire. <b>Flowers</b>: petals golden yellow, 10.2–15.3(–17) × 2.5–6.2 mm, apex rounded, glabrous abaxially; stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 9.9–14.4(–16.7) × 2–4.8 mm, without anthers, second whorl with anthers; anthers straight after dehiscence, epidermis smooth; styles 4.5–10.9 mm. <b>Capsules</b> cup-shaped, 7.1–12.8 × 5.6–8.4 mm, length to 2 times diam., base rounded, not longitudinally ridged. <b>Seeds</b>: coat anticlinal cell walls straight, papillae 8–12 per cell. <b>2n</b> = 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering Mar–Oct.
|habitat=Arroyos, knolls, steep slopes, gypsum and limestone clay and shale.
|elevation=700–1500 m.
|distribution=Tex.;Mexico (Chihuahua;Coahuila;Nuevo León;Zacatecas).
|discussion=<p>In the flora area, <i>Mentzelia mexicana</i> occurs in Brewster, Hudspeth, and Presidio counties.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Mentzelia mexicana
|authority=H. J. Thompson & Zavortink
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Loasaceae
|phenology=Flowering Mar–Oct.
|habitat=Arroyos, knolls, steep slopes, gypsum and limestone clay and shale.
|elevation=700–1500 m.
|distribution=Tex.;Mexico (Chihuahua;Coahuila;Nuevo León;Zacatecas).
|reference=None
|publication title=Wrightia
|publication year=1968
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V12/V12_1019.xml
|genus=Mentzelia
|section=Mentzelia sect. Bartonia
|species=Mentzelia mexicana
}}<!--

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