View source for Sclerocactus papyracanthus

{{Treatment/ID
|accepted_name=Sclerocactus papyracanthus
|accepted_authority=(Engelmann) N. P. Taylor
|publications={{Treatment/Publication
|title=Bradleya
|place=5: 94. 1987
|year=1987
}}
|common_names=Grama-grass cactus;paper-spined cactus;toumeya
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Mammillaria papyracantha
|authority=Engelmann
|rank=species
|publication_title=Mem. Amer. Acad. Arts, n. s.
|publication_place=4: 49. 1849
}}
|synonyms={{Treatment/ID/Synonym
|name=Pediocactus papyracanthus
|authority=(Engelmann) L. D. Benson
|rank=species
}} {{Treatment/ID/Synonym
|name=Toumeya papyracantha
|authority=(Engelmann) Britton & Rose
|rank=species
}}
|hierarchy=Cactaceae;Cactaceae subfam. Cactoideae;Sclerocactus;Sclerocactus papyracanthus
|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>[[Sclerocactus]]</div><div class="higher-taxon"><small>species</small>[[Sclerocactus papyracanthus]]</div></div>
|volume=Volume 4
|mention_page=page 197, 198, 203, 206, 207
|treatment_page=page 205
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>unbranched, cylindric or obconic cylindric, 2–7.5(–8) × 1.2–2.5 cm; ribs not evident, tubercles prominent. <b>Spines</b> dense, obscuring stems; radial spines 5–10 per areole, white, straight, flat, (2–)3–5 × 0.3–0.6 mm; central spines 1(–4) per areole; abaxial central spine 1 per areole, whitish to tan or gray, straight, wavy, twisting, or curling, flat, flexible, papery, with obscure adaxial midrib, sometimes pointing upward and obscuring apex of plant, lacking hook, 15–45(–50) × 1–1.5 mm; lateral or adaxial central spines 0(–3) per areole, white to tan, (3–)20–40 × 0.5–1 mm. <b>Flowers</b> funnelform to narrowly campanulate, 2–2.5 × 1–2.5 cm; outer tepals with green-purple to red-brown midstripes and cream to white margins, cuneate-spatulate, usually 9–20 × 1–3 mm, finely toothed; inner tepals white with brown midstripes, largest tepals oblanceolate, 15–20 × 3.5–4.5 mm, apex acute to mucronate; filaments white to greenish yellow; anthers cream to pale yellow. <b>Fruits</b> indehiscent or irregularly dehiscent, green, subspheric, 4–6 × 3–5 mm, dry at maturity; scales few or none. <b>Seeds</b> black, 2.5–3 × 2–2.5 mm, shiny; testa with fine, rounded papillae.</span><!--

-->{{Treatment/Body
|phenology=Flowering Apr–Jun.
|habitat=Desert grasslands, pinyon-juniper woodlands, Chihuahuan desert scrub
|elevation=1500-2200 m
|distribution=Ariz.;N.Mex.;Tex.
|discussion=<p>With long, flexuous, flattened spines and pale flowers, <i>Sclerocactus papyracanthus</i> is surprisingly cryptic in the field. There has been a long debate concerning its taxonomic placement. Chloroplast DNA analyses of J. M. Porter et al. (2000) unambiguously placed this species within <i>Sclerocactus</i>, a position first suggested based on morphologic evidence (K. D. Heil et al. 1981; C. Glass and R. A. Foster 1984).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Sclerocactus papyracanthus
|authority=(Engelmann) N. P. Taylor
|rank=species
|parent rank=genus
|synonyms=Pediocactus papyracanthus;Toumeya papyracantha
|basionyms=Mammillaria papyracantha
|family=Cactaceae
|phenology=Flowering Apr–Jun.
|habitat=Desert grasslands, pinyon-juniper woodlands, Chihuahuan desert scrub
|elevation=1500-2200 m
|distribution=Ariz.;N.Mex.;Tex.
|reference=None
|publication title=Bradleya
|publication year=1987
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V4/V4_386.xml
|subfamily=Cactaceae subfam. Cactoideae
|genus=Sclerocactus
|species=Sclerocactus papyracanthus
}}<!--

-->[[Category:Treatment]][[Category:Sclerocactus]]