View source for Pediocactus sileri

{{Treatment/ID
|accepted_name=Pediocactus sileri
|accepted_authority=(Engelmann ex J. M. Coulter) L. D. Benson
|publications={{Treatment/Publication
|title=Cact. Succ. J. (Los Angeles)
|place=33: 53. 1961
|year=1961
}}
|common_names=Gypsum cactus;Siler’s pincushion cactus
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}
|basionyms={{Treatment/ID/Basionym
|name=Echinocactus sileri
|authority=Engelmann ex J. M. Coulter
|rank=species
|publication_title=Contr. U.S. Natl. Herb.
|publication_place=3: 376. 1896
}}
|synonyms={{Treatment/ID/Synonym
|name=Utahia sileri
|authority=(Engelmann ex J. M. Coulter) Britton & Rose
|rank=species
}}
|hierarchy=Cactaceae;Cactaceae subfam. Cactoideae;Pediocactus;Pediocactus sileri
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cactaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Cactaceae subfam. Cactoideae]]</div><div class="higher-taxon"><small>genus</small>[[Pediocactus]]</div><div class="higher-taxon"><small>species</small>[[Pediocactus sileri]]</div></div>
|volume=Volume 4
|mention_page=page 213, 216
|treatment_page=page 212
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism architecture;whole_organism architecture;whole_organism architecture;whole_organism growth form"><b>Plants </b>few branched or unbranched.</span> <span class="statement" id="st-d0_s1" data-properties="stem shape;stem shape;stem atypical length;stem length;stem width"><b>Stems </b>depressed-ovoid or occasionally elongate-cylindric, 5–15 (–25) × 6–11.5 cm;</span> <span class="statement" id="st-d0_s2" data-properties="areole shape;areole pubescence">areoles circular to pyriform, villous to lanate.</span> <span class="statement" id="st-d0_s3" data-properties="spine prominence;central spine arrangement;spine arrangement;spine quantity;spine coloration;spine some measurement"><b>Spines </b>distinguishable as radial and central: radial spines 11–15 per areole, white, 11–21 mm;</span> <span class="statement" id="st-d0_s4" data-properties="spine prominence;central spine arrangement;central spine quantity;central spine orientation;central spine coloration;central spine life cycle;central spine coloration;central spine coloration;central spine course;central spine course;central spine length;central spine width">central spines 3–7 per areole, nearly porrect, brownish black aging to pale gray or white, straight or slightly curving at tips, 13–30 × 1 mm at base.</span> <span class="statement" id="st-d0_s5" data-properties="flower length;flower width"><b>Flowers </b>0.8–2.2 × 2–3 cm;</span> <span class="statement" id="st-d0_s6" data-properties="scale length or size;scale shape">scales long fringed;</span> <span class="statement" id="st-d0_s7" data-properties="outer tepal coloration;outer tepal length or size;outer tepal shape;outer tepal length;outer tepal width;margin coloration">outer tepals brown with white margins, long fringed, 9–15 × 3–4.5 mm;</span> <span class="statement" id="st-d0_s8" data-properties="inner tepal coloration;inner tepal length;inner tepal width;vein coloration or density">inner tepals yellow with purple veins, 15–20 × 4.5–6 mm.</span> <span class="statement" id="st-d0_s9" data-properties="fruit coloration;fruit height or length or size;fruit shape;fruit length;fruit width"><b>Fruits </b>greenish yellow, short cylindric, 12–15 × 6–9 mm.</span> <span class="statement" id="st-d0_s10" data-properties="seed coloration;seed length;seed width;seed relief;seed relief"><b>Seeds </b>gray to nearly black, 3.5–5 × 3–3.5 mm, papillate and rugose.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring.
|habitat=Rounded hills in gypsum clay and sandy soils of Moenkopi Formation, Great Basin desert scrub
|elevation=900-1600 m
|distribution=Ariz.;Utah.
|discussion=<p>Of conservation concern.</p><!--
--><p>Pediocactus sileri stems tend to develop a basal thatch of spines that anchor it to the fine, gypsum-rich soil. This species is endemic to a narrow strip along the Arizona-Utah border.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Pediocactus sileri
|authority=(Engelmann ex J. M. Coulter) L. D. Benson
|rank=species
|parent rank=genus
|synonyms=Utahia sileri
|basionyms=Echinocactus sileri
|family=Cactaceae
|phenology=Flowering spring.
|habitat=Rounded hills in gypsum clay and sandy soils of Moenkopi Formation, Great Basin desert scrub
|elevation=900-1600 m
|distribution=Ariz.;Utah.
|reference=None
|publication title=Cact. Succ. J. (Los Angeles)
|publication year=1961
|special status=Endemic;Conservation concern
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V4/V4_394.xml
|subfamily=Cactaceae subfam. Cactoideae
|genus=Pediocactus
|species=Pediocactus sileri
|areole pubescence=villous;lanate
|areole shape=circular;pyriform
|central spine arrangement=radial;radial
|central spine coloration=white;pale gray;brownish black
|central spine course=curving;straight
|central spine length=13mm;30mm
|central spine life cycle=aging
|central spine orientation=porrect
|central spine quantity=3;7
|central spine width=1
|flower length=0.8cm;2.2cm
|flower width=2cm;3cm
|fruit coloration=greenish yellow
|fruit height or length or size=short
|fruit length=12mm;15mm
|fruit shape=cylindric
|fruit width=6mm;9mm
|inner tepal coloration=yellow
|inner tepal length=15mm;20mm
|inner tepal width=4.5mm;6mm
|margin coloration=white
|outer tepal coloration=brown
|outer tepal length=9mm;15mm
|outer tepal length or size=long
|outer tepal shape=fringed
|outer tepal width=3mm;4.5mm
|scale length or size=long
|scale shape=fringed
|seed coloration=gray;nearly black
|seed length=3.5mm;5mm
|seed relief=rugose;papillate
|seed width=3mm;3.5mm
|spine arrangement=radial
|spine coloration=white
|spine prominence=distinguishable;distinguishable
|spine quantity=11;15
|spine some measurement=11mm;21mm
|stem atypical length=15cm;25cm
|stem length=5cm;15cm
|stem shape=elongate-cylindric;depressed-ovoid
|stem width=6cm;11.5cm
|vein coloration or density=purple
|whole_organism architecture=unbranched;branched;few
|whole_organism growth form=plant
}}<!--

-->[[Category:Treatment]][[Category:Pediocactus]]