View source for Sclerocactus nyensis

{{Treatment/ID
|accepted_name=Sclerocactus nyensis
|accepted_authority=Hochstätter
|publications={{Treatment/Publication
|title=Succulenta (Netherlands)
|place=71: 253. 1992
|year=1992
}}
|common_names=Nye fishhook cactus
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Pediocactus nyensis
|authority=(Hochstätter) Hal da
}}
|hierarchy=Cactaceae;Cactaceae subfam. Cactoideae;Sclerocactus;Sclerocactus nyensis
|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 nyensis]]</div></div>
|volume=Volume 4
|mention_page=page 198
|treatment_page=page 206
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="stem architecture;stem architecture;stem shape;stem shape;stem shape;stem shape;stem shape;stem atypical length;stem length;stem atypical width;stem width"><b>Stems </b>unbranched or 2–3-branched, spheric, cylindric, or elongate-cylindric, 5–12 (–16) × 4–8 (–10) cm;</span> <span class="statement" id="st-d0_s1" data-properties="rib count;rib development;tubercle prominence">ribs 12–15, well developed, tubercles sometimes evident on ribs.</span> <span class="statement" id="st-d0_s2" data-properties="spine atypical count;spine count;spine density"><b>Spines </b>10–14 (–17) per areole, dense, obscuring stems;</span> <span class="statement" id="st-d0_s3" data-properties="spine arrangement;spine coloration;spine course;spine prominence or shape;spine some measurement">radial spines white, straight, flat, 8–20 mm;</span> <span class="statement" id="st-d0_s4" data-properties="central spine atypical count;central spine count">central spines (1–) 6–8 per areole;</span> <span class="statement" id="st-d0_s5" data-properties="abaxial and lateral central spine atypical count;abaxial and lateral central spine count;abaxial and lateral central spine coloration;abaxial and lateral central spine coloration;abaxial and lateral central spine shape;abaxial and lateral central spine length;abaxial and lateral central spine width">abaxial and lateral central spines (0–) 3–5 per areole, red or reddish-brown, usually hooked, 20–60 × 0.7 mm;</span> <span class="statement" id="st-d0_s6" data-properties="adaxial central spine atypical count;adaxial central spine count;adaxial central spine coloration;adaxial central spine course;adaxial central spine prominence or shape;adaxial central spine length;adaxial central spine width">adaxial central spines 1–2 (–3) per areole, white, straight, (rarely hooked), flat, usually 25–45 × 1.5–2 mm.</span> <span class="statement" id="st-d0_s7" data-properties="flower shape;flower length;flower width"><b>Flowers </b>campanulate, 3–4 × 2–2.5 cm;</span> <span class="statement" id="st-d0_s8" data-properties="outer tepal coloration;outer tepal coloration;outer tepal shape;outer tepal length;outer tepal width;midstripe coloration">outer tepals with greenish purple midstripes and rose-purple or magenta margins, cuneate-spatulate, usually 10–17 × 5–8 mm;</span> <span class="statement" id="st-d0_s9" data-properties="inner tepal coloration;inner tepal coloration;inner tepal coloration;largest tepal shape;largest tepal length;largest tepal width">inner tepals rose-purple to magenta, largest tepals ovatelanceolate, 18–22 × 6–8 mm;</span> <span class="statement" id="st-d0_s10" data-properties="filament coloration;filament coloration;filament coloration">filaments green to yellow;</span> <span class="statement" id="st-d0_s11" data-properties="anther coloration;anther coloration;anther coloration">anthers cream to yellow.</span> <span class="statement" id="st-d0_s12" data-properties="fruit dehiscence;fruit dehiscence;fruit coloration;fruit coloration;fruit coloration;fruit coloration;fruit shape;fruit length;fruit width;fruit condition or texture"><b>Fruits </b>indehiscent or irregularly dehiscent, green to tan or pale-red, barrel-shaped, 15–20 × 7–15 mm, dry at maturity.</span> <span class="statement" id="st-d0_s13" data-properties="seed coloration;seed architecture;seed length;seed width"><b>Seeds </b>black, irregularly furrowed, 3–3.5 × 2 mm;</span> <span class="statement" id="st-d0_s14" data-properties="papilla shape">testa with rounded papillae.</span><!--

-->{{Treatment/Body
|habitat=Volcanic tuff and other volcanic deposits, northern Mojave desert scrub and saltbush flats
|elevation=1500-1700 m
|distribution=Nev.
|discussion=<p>Of conservation concern.</p><!--
--><p>Apparently endemic to Esmeralda and Nye counties, Nevada, Sclerocactus nyensis displays considerable morphologic variation across the relatively few small populations. Some plants are similar to S. blainei, S. pubispinus, and S. spinosior, but differ in the higher number of central spines (six to eight), and more or less indehiscent fruit. Chloroplast DNA analyses (J. M. Porter et al. 2000) provided evidence that Sclerocactus nyensis is the sister taxon to S. papyracanthus.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Sclerocactus nyensis
|author=
|authority=Hochstätter
|rank=species
|parent rank=genus
|synonyms=Pediocactus nyensis
|basionyms=
|family=Cactaceae
|habitat=Volcanic tuff and other volcanic deposits, northern Mojave desert scrub and saltbush flats
|elevation=1500-1700 m
|distribution=Nev.
|reference=None
|publication title=Succulenta (Netherlands)
|publication year=1992
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V4/V4_385.xml
|subfamily=Cactaceae subfam. Cactoideae
|genus=Sclerocactus
|species=Sclerocactus nyensis
|abaxial and lateral central spine atypical count=0;3
|abaxial and lateral central spine coloration=reddish-brown;red
|abaxial and lateral central spine count=3;5
|abaxial and lateral central spine length=20mm;60mm
|abaxial and lateral central spine shape=hooked
|abaxial and lateral central spine width=0.7
|adaxial central spine atypical count=2;3
|adaxial central spine coloration=white
|adaxial central spine count=1;2
|adaxial central spine course=straight
|adaxial central spine length=25mm;45mm
|adaxial central spine prominence or shape=flat
|adaxial central spine width=1.5mm;2mm
|anther coloration=cream;yellow
|central spine atypical count=1;6
|central spine count=6;8
|filament coloration=green;yellow
|flower length=3cm;4cm
|flower shape=campanulate
|flower width=2cm;2.5cm
|fruit coloration=green;tan or pale-red
|fruit condition or texture=dry
|fruit dehiscence=dehiscent;indehiscent
|fruit length=15mm;20mm
|fruit shape=barrel-shaped
|fruit width=7mm;15mm
|inner tepal coloration=rose-purple;magenta
|largest tepal length=18mm;22mm
|largest tepal shape=ovatelanceolate
|largest tepal width=6mm;8mm
|midstripe coloration=greenish purple
|outer tepal coloration=magenta;rose-purple
|outer tepal length=10mm;17mm
|outer tepal shape=cuneate-spatulate
|outer tepal width=5mm;8mm
|papilla shape=rounded
|rib count=12;15
|rib development=developed
|seed architecture=furrowed
|seed coloration=black
|seed length=3mm;3.5mm
|seed width=2
|spine arrangement=radial
|spine atypical count=14;17
|spine coloration=white
|spine count=10;14
|spine course=straight
|spine density=dense
|spine prominence or shape=flat
|spine some measurement=8mm;20mm
|stem architecture=2-3-branched;unbranched
|stem atypical length=12cm;16cm
|stem atypical width=8cm;10cm
|stem length=5cm;12cm
|stem shape=elongate-cylindric;cylindric;elongate-cylindric;cylindric;spheric
|stem width=4cm;8cm
|tubercle prominence=evident
}}<!--

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