View source for Mentzelia tiehmii

{{Treatment/ID
|accepted_name=Mentzelia tiehmii
|accepted_authority=N. H. Holmgren & P. K. Holmgren
|publications={{Treatment/Publication
|title=Syst. Bot.
|place=27: 748, fig. 1. 2002
|year=2002
}}
|common_names=Jerry’s blazingstar
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}
|basionyms=
|synonyms=
|hierarchy=Loasaceae;Mentzelia;Mentzelia sect. Bartonia;Mentzelia tiehmii
|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 tiehmii]]</div></div>
|volume=Volume 12
|mention_page=page 500
|treatment_page=page 510
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism duration;whole_organism growth form;whole_organism growth form;caudex location"><b>Plants </b>perennial, bushlike, with subterranean caudices.</span> <span class="statement" id="st-d0_s1" data-properties="stem quantity;stem orientation;stem course"><b>Stems </b>multiple, erect, straight;</span> <span class="statement" id="st-d0_s2" data-properties="stem architecture or shape">branches along entire stem, all ± equal, antrorse, upcurved;</span> <span class="statement" id="st-d0_s3" data-properties="branch variability;branch orientation;branch orientation;branch pubescence">hairy.</span> <span class="statement" id="st-d0_s4" data-properties="blade length;blade width;blade width;blade some measurement"><b>Leaves:</b> blade 19–47.5 × 5.8–9.1 mm, widest intersinus distance 4.6–7.1 mm;</span> <span class="statement" id="st-d0_s5" data-properties="proximal leaf shape;margin architecture or shape;tooth quantity;tooth orientation;tooth some measurement">proximal oblanceolate to elliptic, margins dentate, teeth 6–20, perpendicular to leaf axis, 0.5–1.9 mm;</span> <span class="statement" id="st-d0_s6" data-properties="distal leaf shape;distal leaf shape;distal leaf shape;distal leaf shape;distal leaf shape;base architecture or fixation;margin architecture or shape;margin architecture or shape;tooth quantity;tooth orientation;tooth some measurement">distal lanceolate, deltate, or cordate, base clasping, margins entire or dentate, teeth 0–6, perpendicular to leaf axis, 0.4–1.4 mm;</span> <span class="statement" id="st-d0_s7" data-properties="grappling-hook trichome architecture;grappling-hook architecture;trichome architecture or shape;surface coloration;surface pubescence">abaxial surface with complex grappling-hook trichomes, adaxial surface with complex grappling-hook and needlelike trichomes, both surfaces green, moderately hairy.</span> <span class="statement" id="st-d0_s8" data-properties="margin architecture or shape"><b>Bracts:</b> margins entire.</span> <span class="statement" id="st-d0_s9" data-properties="petal coloration;petal length;petal width;apex shape;apex pubescence"><b>Flowers:</b> petals golden yellow, 7.7–10.8 × 1.8–4.8 mm, apex rounded, glabrous abaxially;</span> <span class="statement" id="st-d0_s10" data-properties="stamen coloration;stamen quantity;outermost stamen architecture;all shape;all shape;all length;all width">stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 7–7.3 × 1.2–2 mm, with anthers, second whorl with anthers;</span> <span class="statement" id="st-d0_s11" data-properties="anther dehiscence;epidermis architecture or pubescence or relief">anthers twisted after dehiscence, epidermis smooth;</span> <span class="statement" id="st-d0_s12" data-properties="style some measurement">styles 5.8–8 mm.</span> <span class="statement" id="st-d0_s13" data-properties="capsule shape;capsule length;capsule width;base shape;base shape"><b>Capsules </b>cupshaped, 4–6.6 × 4–7.4 mm, base rounded, not longitudinally ridged.</span> <span class="statement" id="st-d0_s14" data-properties="cell-wall orientation;cell-wall course;papilla quantity"><b>Seeds:</b> coat anticlinal cell-walls straight, papillae 15–46 per cell.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=White, sparsely vegetated clay knolls rich in gypsum.
|elevation=1500–1600 m.
|distribution=Nev.
|discussion=<p>Mentzelia tiehmii occurs in Lincoln and Nye counties.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Mentzelia tiehmii
|authority=N. H. Holmgren & P. K. Holmgren
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Loasaceae
|phenology=Flowering Jun–Aug.
|habitat=White, sparsely vegetated clay knolls rich in gypsum.
|elevation=1500–1600 m.
|distribution=Nev.
|reference=None
|publication title=Syst. Bot.
|publication year=2002
|special status=Endemic;Conservation concern
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V12/V12_351.xml
|genus=Mentzelia
|section=Mentzelia sect. Bartonia
|species=Mentzelia tiehmii
|all length=7mm;7.3mm
|all shape=clawed;spatulate
|all width=1.2mm;2mm
|anther dehiscence=twisted
|apex pubescence=glabrous
|apex shape=rounded
|base architecture or fixation=clasping
|base shape=ridged;rounded
|blade length=19mm;47.5mm
|blade some measurement=4.6mm;7.1mm
|blade width=widest;5.8mm;9.1mm
|branch orientation=upcurved;antrorse
|branch pubescence=hairy
|branch variability=equal
|capsule length=4mm;6.6mm
|capsule shape=cup-shaped
|capsule width=4mm;7.4mm
|caudex location=subterranean
|cell-wall course=straight
|cell-wall orientation=anticlinal
|distal leaf shape=cordate;deltate;cordate;deltate;lanceolate
|epidermis architecture or pubescence or relief=smooth
|grappling-hook architecture=complex
|grappling-hook trichome architecture=complex
|margin architecture or shape=entire;dentate;entire;dentate
|outermost stamen architecture=petaloid
|papilla quantity=15;46
|petal coloration=golden yellow
|petal length=7.7mm;10.8mm
|petal width=1.8mm;4.8mm
|proximal leaf shape=oblanceolate;elliptic
|stamen coloration=golden yellow
|stamen quantity=5
|stem architecture or shape=entire
|stem course=straight
|stem orientation=erect
|stem quantity=multiple
|style some measurement=5.8mm;8mm
|surface coloration=green
|surface pubescence=hairy
|tooth orientation=perpendicular;perpendicular
|tooth quantity=0;6
|tooth some measurement=0.4mm;1.4mm
|trichome architecture or shape=needlelike
|whole_organism duration=perennial
|whole_organism growth form=plant;bushlike
}}<!--

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