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| − | --><span class="statement" id="st-d0_s0" data-properties="plant architecture;spine coloration;spine pubescence"><b>Plants </b>unbranched (rarely to 8 mature branches), white bristly spines obscuring stem.</span> <span class="statement" id="st-d0_s1" data-properties="taproot height or length or size;taproot shape;taproot shape;taproot texture;taproot count"><b>Roots </b>dominated by a short or narrowly conic, carrotlike, succulent taproot, 1/3–1/2 of stem diam.</span> <span class="statement" id="st-d0_s2" data-properties="stem location;stem prominence;stem shape;stem shape;stem shape;stem shape;stem shape;stem shape;stem shape;stem shape;stem shape;stem length;stem width"><b>Stems </b>deep-seated, inconspicuous, obovoid, ovoid, or spheric to ± conic, 2.5–6 × 1–3.4 cm;</span> <span class="statement" id="st-d0_s3" data-properties="tubercle length;tubercle width;tubercle pubescence or texture">tubercles 3–6 × 2.6–4 mm, moderately soft;</span> <span class="statement" id="st-d0_s4" data-properties="areolar gland count">areolar glands absent;</span> <span class="statement" id="st-d0_s5" data-properties="parenchyma coating">parenchyma not mucilaginous;</span> <span class="statement" id="st-d0_s6" data-properties="druse size;cortex count">druses in pith and cortex abundant but nearly microscopic;</span> <span class="statement" id="st-d0_s7" data-properties="pith count">pith 1/2 of lesser stem diam.;</span> <span class="statement" id="st-d0_s8" data-properties="medullary system architecture;medullary system count">medullary vascular system absent.</span> <span class="statement" id="st-d0_s9" data-properties="spine atypical count;spine atypical count;spine count;spine coloration;tip coloration;spine size;spine size"><b>Spines </b>(21–) 31–44 (–55) per areole, all snowy white, dark tips (tan to reddish-brown) on medium and large spines;</span> <span class="statement" id="st-d0_s10" data-properties="spine arrangement;spine atypical count;spine count;spine atypical length;spine atypical length;spine length;spine width">radial spines (18–) 20–41 per areole, (4–) 6–9 (–10) × 0.03–0.2 mm;</span> <span class="statement" id="st-d0_s11" data-properties="subcentral spine count">subcentral spines 0–12 per areole;</span> <span class="statement" id="st-d0_s12" data-properties="outer central spine atypical count;outer central spine atypical count;outer central spine count;outer central spine orientation;outer central spine orientation">outer central spines (1–) 3–9 (–17) per areole, appressed or (usually) slightly projecting;</span> <span class="statement" id="st-d0_s13" data-properties="inner central spine atypical count;inner central spine count;inner central spine orientation;inner central spine orientation;inner central spine orientation;inner central spine orientation;inner central spine orientation;inner central spine course;longest spine atypical length;longest spine atypical length;longest spine length;longest spine width">inner central spines (spines most likely to interpreted as central) 0 (–1) per areole, ascending, descending, or porrect, straight, longest spines (6–) 7–14 (–19) × 0.17–0.27 mm.</span> <span class="statement" id="st-d0_s14" data-properties="flower length;flower width;flower position"><b>Flowers </b>nearly apical, 15–30 × 13–19 mm;</span> <span class="statement" id="st-d0_s15" data-properties="outer tepal shape">outer tepals conspicuously fringed;</span> <span class="statement" id="st-d0_s16" data-properties="inner tepal count;margin coloration;margin coloration;midstripe coloration;midstripe coloration;midstripe coloration;midstripe coloration;midstripe coloration;midstripe length;midstripe width">inner tepals 14 per flower, margins white or cream (to light pink), midstripes pinkish to brown or brownish green, proximally white, 8–12 × 1.5–3 mm;</span> <span class="statement" id="st-d0_s17" data-properties="outer filament coloration;outer filament coloration">outer filaments white or pinkish;</span> <span class="statement" id="st-d0_s18" data-properties="anther coloration">anthers bright-yellow;</span> <span class="statement" id="st-d0_s19" data-properties="stigma lobe count;stigma lobe coloration;stigma lobe coloration;stigma lobe coloration">stigma lobes usually 4, dark green to bright-yellow.</span> <span class="statement" id="st-d0_s20" data-properties="fruit coloration;fruit shape;fruit shape;fruit shape;fruit shape;fruit shape;fruit length;fruit width;fruit texture"><b>Fruits </b>bright red throughout, ellipsoid, cylindric, or clavate, 11–20 × 3–5 mm, not very succulent;</span> <span class="statement" id="st-d0_s21" data-properties="floral remnant duration">floral remnant deciduous.</span> <span class="statement" id="st-d0_s22" data-properties=""><b>Seeds </b>black, ± spheric, ± 1.2 mm, pitted.</span> <span class="statement" id="st-d0_s23" data-properties="seed coloration;seed shape;seed some measurement;seed relief;2n chromosome count">2n = 22.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>unbranched (rarely to 8 mature branches), white bristly spines obscuring stem. <b>Roots</b> dominated by a short or narrowly conic, carrotlike, succulent taproot, 1/3–1/2 of stem diam. <b>Stems</b> deep-seated, inconspicuous, obovoid, ovoid, or spheric to ± conic, 2.5–6 × 1–3.4 cm; tubercles 3–6 × 2.6–4 mm, moderately soft; areolar glands absent; parenchyma not mucilaginous; druses in pith and cortex abundant but nearly microscopic; pith 1/2 of lesser stem diam.; medullary vascular system absent. <b>Spines</b> (21–)31–44(–55) per areole, all snowy white, dark tips (tan to reddish brown) on medium and large spines; radial spines (18–)20–41 per areole, (4–)6–9(–10) × 0.03–0.2 mm; subcentral spines 0–12 per areole; outer central spines (1–)3–9(–17) per areole, appressed or (usually) slightly projecting; inner central spines (spines most likely to be interpreted as central) 0(–1) per areole, ascending, descending, or porrect, straight, longest spines (6–)7–14(–19) × 0.17–0.27 mm. <b>Flowers</b> nearly apical, 15–30 × 13–19 mm; outer tepals conspicuously fringed; inner tepals 14 per flower, margins white or cream (to light pink), midstripes pinkish to brown or brownish green, proximally white, 8–12 × 1.5–3 mm; outer filaments white or pinkish; anthers bright yellow; stigma lobes usually 4, dark green to bright yellow. <b>Fruits</b> bright red throughout, ellipsoid, cylindric, or clavate, 11–20 × 3–5 mm, not very succulent; floral remnant deciduous. <b>Seeds</b> black, ± spheric, ± 1.2 mm, pitted. <b>2n</b> = 22.</span><!-- |
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| | -->{{Treatment/Body | | -->{{Treatment/Body |
| | + | |phenology=Flowering Feb–Mar(-May); fruiting mostly May. |
| | |habitat=Limestone slopes, mostly in crevices of massive limestone outcrops | | |habitat=Limestone slopes, mostly in crevices of massive limestone outcrops |
| | |elevation=700-1700 m | | |elevation=700-1700 m |
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| | |basionyms=Escobesseya duncanii | | |basionyms=Escobesseya duncanii |
| | |family=Cactaceae | | |family=Cactaceae |
| | + | |phenology=Flowering Feb–Mar(-May); fruiting mostly May. |
| | |habitat=Limestone slopes, mostly in crevices of massive limestone outcrops | | |habitat=Limestone slopes, mostly in crevices of massive limestone outcrops |
| | |elevation=700-1700 m | | |elevation=700-1700 m |
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| | |publication year=1969 | | |publication year=1969 |
| | |special status= | | |special status= |
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V4/V4_423.xml | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V4/V4_423.xml |
| | |subfamily=Cactaceae subfam. Cactoideae | | |subfamily=Cactaceae subfam. Cactoideae |
| | |genus=Coryphantha | | |genus=Coryphantha |
| | |species=Coryphantha duncanii | | |species=Coryphantha duncanii |
| − | |2n chromosome count=22
| |
| − | |anther coloration=bright-yellow
| |
| − | |areolar gland count=absent
| |
| − | |cortex count=abundant
| |
| − | |druse size=microscopic
| |
| − | |floral remnant duration=deciduous
| |
| − | |flower length=15mm;30mm
| |
| − | |flower position=apical
| |
| − | |flower width=13mm;19mm
| |
| − | |fruit coloration=bright red
| |
| − | |fruit length=11mm;20mm
| |
| − | |fruit shape=clavate;cylindric;clavate;cylindric;ellipsoid
| |
| − | |fruit texture=succulent
| |
| − | |fruit width=3mm;5mm
| |
| − | |inner central spine atypical count=0;1
| |
| − | |inner central spine count=0
| |
| − | |inner central spine course=straight
| |
| − | |inner central spine orientation=porrect;descending;porrect;descending;ascending
| |
| − | |inner tepal count=14
| |
| − | |longest spine atypical length=14mm;19mm
| |
| − | |longest spine length=7mm;14mm
| |
| − | |longest spine width=0.17mm;0.27mm
| |
| − | |margin coloration=cream;white
| |
| − | |medullary system architecture=vascular
| |
| − | |medullary system count=absent
| |
| − | |midstripe coloration=white;pinkish;brown or brownish green
| |
| − | |midstripe length=8mm;12mm
| |
| − | |midstripe width=1.5mm;3mm
| |
| − | |outer central spine atypical count=9;17
| |
| − | |outer central spine count=3;9
| |
| − | |outer central spine orientation=projecting;appressed
| |
| − | |outer filament coloration=pinkish;white
| |
| − | |outer tepal shape=fringed
| |
| − | |parenchyma coating=not mucilaginous
| |
| − | |pith count=1/2
| |
| − | |plant architecture=unbranched
| |
| − | |seed coloration=black
| |
| − | |seed relief=pitted
| |
| − | |seed shape=spheric
| |
| − | |seed some measurement=1.2
| |
| − | |spine arrangement=radial
| |
| − | |spine atypical count=18;20
| |
| − | |spine atypical length=9mm;10mm
| |
| − | |spine coloration=snowy white;white
| |
| − | |spine count=20;41
| |
| − | |spine length=6mm;9mm
| |
| − | |spine pubescence=bristly
| |
| − | |spine size=large;medium
| |
| − | |spine width=0.03mm;0.2mm
| |
| − | |stem length=2.5cm;6cm
| |
| − | |stem location=deep-seated
| |
| − | |stem prominence=inconspicuous
| |
| − | |stem shape=spheric;more or less conic
| |
| − | |stem width=1cm;3.4cm
| |
| − | |stigma lobe coloration=dark green;bright-yellow
| |
| − | |stigma lobe count=4
| |
| − | |subcentral spine count=0;12
| |
| − | |taproot count=1/3;1/2
| |
| − | |taproot height or length or size=short
| |
| − | |taproot shape=carrotlike;conic
| |
| − | |taproot texture=succulent
| |
| − | |tip coloration=dark
| |
| − | |tubercle length=3mm;6mm
| |
| − | |tubercle pubescence or texture=soft
| |
| − | |tubercle width=2.6mm;4mm
| |
| | }}<!-- | | }}<!-- |
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| | -->[[Category:Treatment]][[Category:Coryphantha]] | | -->[[Category:Treatment]][[Category:Coryphantha]] |
Plants unbranched (rarely to 8 mature branches), white bristly spines obscuring stem. Roots dominated by a short or narrowly conic, carrotlike, succulent taproot, 1/3–1/2 of stem diam. Stems deep-seated, inconspicuous, obovoid, ovoid, or spheric to ± conic, 2.5–6 × 1–3.4 cm; tubercles 3–6 × 2.6–4 mm, moderately soft; areolar glands absent; parenchyma not mucilaginous; druses in pith and cortex abundant but nearly microscopic; pith 1/2 of lesser stem diam.; medullary vascular system absent. Spines (21–)31–44(–55) per areole, all snowy white, dark tips (tan to reddish brown) on medium and large spines; radial spines (18–)20–41 per areole, (4–)6–9(–10) × 0.03–0.2 mm; subcentral spines 0–12 per areole; outer central spines (1–)3–9(–17) per areole, appressed or (usually) slightly projecting; inner central spines (spines most likely to be interpreted as central) 0(–1) per areole, ascending, descending, or porrect, straight, longest spines (6–)7–14(–19) × 0.17–0.27 mm. Flowers nearly apical, 15–30 × 13–19 mm; outer tepals conspicuously fringed; inner tepals 14 per flower, margins white or cream (to light pink), midstripes pinkish to brown or brownish green, proximally white, 8–12 × 1.5–3 mm; outer filaments white or pinkish; anthers bright yellow; stigma lobes usually 4, dark green to bright yellow. Fruits bright red throughout, ellipsoid, cylindric, or clavate, 11–20 × 3–5 mm, not very succulent; floral remnant deciduous. Seeds black, ± spheric, ± 1.2 mm, pitted. 2n = 22.
Phenology: Flowering Feb–Mar(-May); fruiting mostly May.
Habitat: Limestone slopes, mostly in crevices of massive limestone outcrops
Elevation: 700-1700 m
Distribution
N.Mex., Tex.
Discussion
Of conservation concern.
Coryphantha duncanii is inconspicuous, difficult to identify, and usually rare. Other coryphanthas in its range have thicker spines, except for C. chaffeyi and C. dasyacantha. Coryphantha duncanii resembles a stunted, crevice-limited growth form of C. dasyacantha but has caducous floral remnant. It is closely related to C. zilziana Boedeker of Mexico.
Selected References
None.
