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
|basionyms={{Treatment/ID/Synonym
|name=Echinocactus sileri
|authority=Engelmann ex J. M. Coulter
}}
|synonyms={{Treatment/ID/Synonym
|name=Utahia sileri
|authority=(Engelmann ex J. M. Coulter) Britton & Rose
}}
|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-undefined" data-properties=""><b>Plants </b>few branched or unbranched. <b>Stems</b> depressed-ovoid or occasionally elongate-cylindric, 5–15(–25) × 6–11.5 cm; areoles circular to pyriform, villous to lanate. <b>Spines</b> distinguishable as radial and central: radial spines 11–15 per areole, white, 11–21 mm; 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. <b>Flowers</b> 0.8–2.2 × 2–3 cm; scales long fringed; outer tepals brown with white margins, long fringed, 9–15 × 3–4.5 mm; inner tepals yellow with purple veins, 15–20 × 4.5–6 mm. <b>Fruits</b> greenish yellow, short cylindric, 12–15 × 6–9 mm. <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><i>Pediocactus sileri</i> 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
|author=
|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=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V4/V4_394.xml
|subfamily=Cactaceae subfam. Cactoideae
|genus=Pediocactus
|species=Pediocactus sileri
}}<!--

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