Difference between revisions of "Sclerocactus nyensis"

Hochstätter

Succulenta (Netherlands) 71: 253. 1992.

Common names: Nye fishhook cactus
Synonyms: Pediocactus nyensis (Hochstätter) Hal da
Treatment appears in FNA Volume 4. Treatment on page 206. Mentioned on page 198.
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--><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><!--
+
--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>unbranched or 2–3-branched, spheric, cylindric, or elongate-cylindric, 5–12(–16) × 4–8(–10) cm; ribs 12–15, well developed, tubercles sometimes evident on ribs. <b>Spines</b> 10–14(–17) per areole, dense, obscuring stems; radial spines white, straight, flat, 8–20 mm; central spines (1–)6–8 per areole; abaxial and lateral central spines (0–)3–5 per areole, red or reddish brown, usually hooked, 20–60 × 0.7 mm; adaxial central spines 1–2(–3) per areole, white, straight, (rarely hooked), flat, usually 25–45 × 1.5–2 mm. <b>Flowers</b> campanulate, 3–4 × 2–2.5 cm; outer tepals with greenish purple midstripes and rose-purple or magenta margins, cuneate-spatulate, usually 10–17 × 5–8 mm; inner tepals rose-purple to magenta, largest tepals ovate-lanceolate, 18–22 × 6–8 mm; filaments green to yellow; anthers cream to yellow. <b>Fruits</b> indehiscent or irregularly dehiscent, green to tan or pale red, barrel-shaped, 15–20 × 7–15 mm, dry at maturity. <b>Seeds</b> black, irregularly furrowed, 3–3.5 × 2 mm; testa with rounded papillae.</span><!--
  
 
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|phenology=Flowering May.
 
|habitat=Volcanic tuff and other volcanic deposits, northern Mojave desert scrub and saltbush flats
 
|habitat=Volcanic tuff and other volcanic deposits, northern Mojave desert scrub and saltbush flats
 
|elevation=1500-1700 m
 
|elevation=1500-1700 m
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|basionyms=
 
|basionyms=
 
|family=Cactaceae
 
|family=Cactaceae
 +
|phenology=Flowering May.
 
|habitat=Volcanic tuff and other volcanic deposits, northern Mojave desert scrub and saltbush flats
 
|habitat=Volcanic tuff and other volcanic deposits, northern Mojave desert scrub and saltbush flats
 
|elevation=1500-1700 m
 
|elevation=1500-1700 m
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|publication year=1992
 
|publication year=1992
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V4/V4_385.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V4/V4_385.xml
 
|subfamily=Cactaceae subfam. Cactoideae
 
|subfamily=Cactaceae subfam. Cactoideae
 
|genus=Sclerocactus
 
|genus=Sclerocactus
 
|species=Sclerocactus nyensis
 
|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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-->[[Category:Treatment]][[Category:Sclerocactus]]
 
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Revision as of 15:08, 27 July 2019

Stems unbranched or 2–3-branched, spheric, cylindric, or elongate-cylindric, 5–12(–16) × 4–8(–10) cm; ribs 12–15, well developed, tubercles sometimes evident on ribs. Spines 10–14(–17) per areole, dense, obscuring stems; radial spines white, straight, flat, 8–20 mm; central spines (1–)6–8 per areole; abaxial and lateral central spines (0–)3–5 per areole, red or reddish brown, usually hooked, 20–60 × 0.7 mm; adaxial central spines 1–2(–3) per areole, white, straight, (rarely hooked), flat, usually 25–45 × 1.5–2 mm. Flowers campanulate, 3–4 × 2–2.5 cm; outer tepals with greenish purple midstripes and rose-purple or magenta margins, cuneate-spatulate, usually 10–17 × 5–8 mm; inner tepals rose-purple to magenta, largest tepals ovate-lanceolate, 18–22 × 6–8 mm; filaments green to yellow; anthers cream to yellow. Fruits indehiscent or irregularly dehiscent, green to tan or pale red, barrel-shaped, 15–20 × 7–15 mm, dry at maturity. Seeds black, irregularly furrowed, 3–3.5 × 2 mm; testa with rounded papillae.


Phenology: Flowering May.
Habitat: Volcanic tuff and other volcanic deposits, northern Mojave desert scrub and saltbush flats
Elevation: 1500-1700 m

Discussion

Of conservation concern.

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.

Selected References

None.

Lower Taxa

None.