View source for Mentzelia dispersa

{{Treatment/ID
|accepted_name=Mentzelia dispersa
|accepted_authority=S. Watson
|publications={{Treatment/Publication
|title=Proc. Amer. Acad. Arts
|place=11: 137. 1876
|year=1876
}}
|common_names=Nada stickleaf;bushy or Nevada blazingstar
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Synonym
|name=Mentzelia albicaulis var. integrifolia
|authority=S. Watson
}}
|synonyms={{Treatment/ID/Synonym
|name=M. dispersa var. compacta
|authority=(A. Nelson) J. F. Macbride
}} {{Treatment/ID/Synonym
|name=M. dispersa var. latifolia
|authority=(Rydberg) J. F. Macbride
}} {{Treatment/ID/Synonym
|name=M. dispersa var. obtusa
|authority=Jepson
}} {{Treatment/ID/Synonym
|name=M. pinetorum
|authority=A. Heller
}}
|hierarchy=Loasaceae;Mentzelia;Mentzelia sect. Trachyphytum;Mentzelia dispersa
|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. Trachyphytum]]</div><div class="higher-taxon"><small>species</small>[[Mentzelia dispersa]]</div></div>
|volume=Volume 12
|mention_page=page 531, 532, 534, 537, 541
|treatment_page=page 536
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>wandlike or candelabra-form, 10–40(–50) cm. <b>Basal</b> leaves persisting; petiole present or absent; blade elliptic to linear, margins usually dentate, sinuses extending less than 1/4 to midvein, or entire, rarely deeply lobed. <b>Cauline</b> leaves: petiole present or absent (proximal leaves), absent (distal leaves); blade elliptic to linear (proximal leaves), orbiculate to linear (distal leaves), to 10 cm, margins usually dentate, sinuses extending less than 1/4 to midvein, or entire, rarely deeply lobed. <b>Bracts</b> green, orbiculate to ovate, 2.1–6.5 × 1.1–3 mm, width 1/3–7/8 length, not concealing capsule, margins 3-lobed or entire. <b>Flowers</b>: sepals 1–3.5 mm; petals usually yellow, rarely orange, proximally, yellow distally, 2–6(–8) mm, apex rounded; stamens 20–40, 2–4.5 mm, filaments monomorphic, filiform, unlobed; styles 2–3.5(–5) mm. <b>Capsules</b> narrow-cylindric, 7–30 × 1–2.5 mm, axillary curved to 30° at maturity, usually inconspicuously longitudinally ribbed. <b>Seeds</b> 10–20, in 1 row distal to mid fruit, tan, dark-mottled or not, triangular prisms, surface ± smooth under 10× magnification; recurved flap over hilum absent; seed coat cell outer periclinal wall flat. <b>2n</b> = 18, 36, 72.</span><!--

-->{{Treatment/Body
|phenology=Flowering (Apr–)May–Aug(–Sep).
|habitat=Loamy to sandy or rocky slopes, grasslands, scrub, dry forests, roadsides.
|elevation=400–3100 m.
|distribution=B.C.;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Dak.;Oreg.;S.Dak.;Utah;Wash.;Wyo.
|discussion=<p><i>Mentzelia dispersa</i> is the only polyploid species solely derived from the “Affines” clade and may be an autopolyploid complex (J. M. Brokaw and L. Hufford 2010, 2010b). Morphological characters that consistently distinguish cytotypes within <i>M. dispersa</i> have not been found. <i>Mentzelia dispersa</i> is most easily confused with <i>M. affinis</i> (see discussion under 65. <i>M. affinis</i>) but is phylogenetically distinct (Brokaw and Hufford 2010, 2010b).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Mentzelia dispersa
|author=
|authority=S. Watson
|rank=species
|parent rank=section
|synonyms=M. dispersa var. compacta;M. dispersa var. latifolia;M. dispersa var. obtusa;M. pinetorum
|basionyms=Mentzelia albicaulis var. integrifolia
|family=Loasaceae
|phenology=Flowering (Apr–)May–Aug(–Sep).
|habitat=Loamy to sandy or rocky slopes, grasslands, scrub, dry forests, roadsides.
|elevation=400–3100 m.
|distribution=B.C.;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Dak.;Oreg.;S.Dak.;Utah;Wash.;Wyo.
|reference=None
|publication title=Proc. Amer. Acad. Arts
|publication year=1876
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V12/V12_852.xml
|genus=Mentzelia
|section=Mentzelia sect. Trachyphytum
|species=Mentzelia dispersa
}}<!--

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