View source for Mentzelia hirsutissima

{{Treatment/ID
|accepted_name=Mentzelia hirsutissima
|accepted_authority=S. Watson
|publications={{Treatment/Publication
|title=Proc. Amer. Acad. Arts
|place=12: 252. 1877
|year=1877
}}
|common_names=Hairy blazingstar
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Mentzelia hirsutissima var. stenophylla
|authority=(Urban & Gilg) I. M. Johnston
|rank=variety
}} {{Treatment/ID/Synonym
|name=Mentzelia stenophylla
|authority=Urban & Gilg
|rank=species
}}
|hierarchy=Loasaceae;Mentzelia;Mentzelia sect. Bicuspidaria;Mentzelia hirsutissima
|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. Bicuspidaria]]</div><div class="higher-taxon"><small>species</small>[[Mentzelia hirsutissima]]</div></div>
|volume=Volume 12
|mention_page=page 497, 524
|treatment_page=page 525
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>(5–)15–30(–40) cm. <b>Basal</b> leaves: petioles present or absent; blade oblanceolate, to 11 cm; margins shallowly lobed, lobes rounded. <b>Cauline</b> leaves: petioles absent; blade ovate to lanceolate, to 11 cm, base often cordate-clasping, margins deeply to shallowly lobed, lobes acute. <b>Bracts</b> green, inconspicuous, not concealing pedicel, ovary, or capsule. <b>Flowers</b>: petals yellow to orange, obovate, 12–31 mm, apex mucronate; stamens 4–12 mm, less than 1/2 petal length, all fertile, none petaloid (flowers appearing to have 5 petals); filaments ±monomorphic, linear, most or all distally 2-lobed, lobes to 0.3 mm; anther stalk longer than filament lobes; style 6–15 mm. <b>Capsules</b> cylindric to cup-shaped, 13–25 × 5–8 mm, erect. <b>Seeds</b> widest at middle, not grooved; seed coat anticlinal cell walls deeply wavy.</span><!--

-->{{Treatment/Body
|phenology=Flowering Apr–May.
|habitat=Washes, fans, slopes, desert scrub.
|elevation=0–800 m.
|distribution=Calif.;Mexico (Baja California;Baja California Sur;Sonora).
|discussion=<p><i>Mentzelia hirsutissima</i> is superficially similar to <i>M. tricuspis</i> and <i>M. tridentata</i>, but these taxa can be distinguished geographically. <i>Mentzelia hirsutissima</i> is distributed primarily on the Baja California Peninsula and occurs in California only in San Diego and far western Imperial counties, whereas <i>M. tricuspis</i> and <i>M. tridentata</i> occur north and east of this distribution. California populations previously have been called <i>M. hirsutissima</i> <i></i>var.<i> stenophylla</i>. However, G. S. Daniels (1970) found that characters used to distinguish varieties of <i>M. hirsutissima</i> were not stable within populations.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Mentzelia hirsutissima
|authority=S. Watson
|rank=species
|parent rank=section
|synonyms=Mentzelia hirsutissima var. stenophylla;Mentzelia stenophylla
|basionyms=
|family=Loasaceae
|phenology=Flowering Apr–May.
|habitat=Washes, fans, slopes, desert scrub.
|elevation=0–800 m.
|distribution=Calif.;Mexico (Baja California;Baja California Sur;Sonora).
|reference=None
|publication title=Proc. Amer. Acad. Arts
|publication year=1877
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V12/V12_143.xml
|genus=Mentzelia
|section=Mentzelia sect. Bicuspidaria
|species=Mentzelia hirsutissima
}}<!--

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