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| − | --><span class="statement" id="st-d0_s0" data-properties="shrub some measurement"><b>Shrubs,</b> forming clumps, 3–9 cm.</span> <span class="statement" id="st-d0_s1" data-properties="root shape;root length;root width"><b>Roots </b>tuberlike, 7–8 × 2.5–3 cm.</span> <span class="statement" id="st-d0_s2" data-properties="stem segment shape;stem segment shape;stem segment shape;stem segment shape;stem segment length;stem segment width"><b>Stem </b>segments short cylindric to clavate, 3.5–9 × 1.5–3 cm;</span> <span class="statement" id="st-d0_s3" data-properties="tubercle atypical some measurement;tubercle some measurement">tubercles 8–18 (–22) mm;</span> <span class="statement" id="st-d0_s4" data-properties="areole arrangement or shape;areole diam">areoles circular 3–4 mm in diam.;</span> <span class="statement" id="st-d0_s5" data-properties="wool coloration">wool yellowish white.</span> <span class="statement" id="st-d0_s6" data-properties=""><b>Spines </b>(1–) 5–15 per areole, mostly in distal areoles, 3–5 cm;</span> <span class="statement" id="st-d0_s7" data-properties="spine atypical count;spine count;spine some measurement;spine size;abaxial spine count;abaxial spine orientation;abaxial spine coloration;abaxial spine shape;abaxial spine shape;abaxial spine shape">major 1–3 abaxial spines deflexed, usually chalky white (at least adaxially), flattened to angular-flattened, longest central abaxial spine commonly twisted or curved (at times the only spine in depauperate specimens, those mostly from Big Bend region of Texas);</span> <span class="statement" id="st-d0_s8" data-properties="longest central abaxial spine architecture;longest central abaxial spine course;longest central abaxial spine size;adaxial spine count;adaxial spine arrangement;adaxial spine orientation;adaxial spine coloration;adaxial spine coloration;adaxial spine coloration;adaxial spine shape">major 0–5 adaxial spines divergent, ascending, brown to blackish and sometimes chalky, ± terete.</span> <span class="statement" id="st-d0_s9" data-properties="glochid position;glochid coloration;glochid some measurement"><b>Glochids </b>adaxial in areole, yellow, to 4 mm.</span> <span class="statement" id="st-d0_s10" data-properties="inner tepal coloration;inner tepal some measurement"><b>Flowers:</b> inner tepals bright-yellow, 25 mm;</span> <span class="statement" id="st-d0_s11" data-properties="filament coloration">filaments green;</span> <span class="statement" id="st-d0_s12" data-properties="style coloration">style cream;</span> <span class="statement" id="st-d0_s13" data-properties="stigma lobe coloration">stigma lobes pale yellow-green.</span> <span class="statement" id="st-d0_s14" data-properties="fruit coloration;fruit life cycle;fruit coloration;fruit shape;fruit shape;fruit shape;fruit atypical length;fruit length;fruit width;fruit condition or texture;fruit architecture;fruit pubescence"><b>Fruits </b>yellow, aging gray, cylindric to ellipsoid, 20–25 (–50) × 10–15 mm, becoming dry, spineless, glochidiate;</span> <span class="statement" id="st-d0_s15" data-properties="areole count">areoles 25–35.</span> <span class="statement" id="st-d0_s16" data-properties="number variability"><b>Seeds </b>yellowish to brownish, ± circular, to 5 mm in diam., with various numbers and sizes of bumps.</span> <span class="statement" id="st-d0_s17" data-properties="seed coloration;seed coloration;seed coloration;seed arrangement or shape;seed diam;2n chromosome count">2n = 22.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> forming clumps, 3–9 cm. <b>Roots</b> tuberlike, 7–8 × 2.5–3 cm. <b>Stem</b> segments short cylindric to clavate, 3.5–9 × 1.5–3 cm; tubercles 8–18(–22) mm; areoles circular 3–4 mm in diam.; wool yellowish white. <b>Spines</b> (1–)5–15 per areole, mostly in distal areoles, 3–5 cm; major 1–3 abaxial spines deflexed, usually chalky white (at least adaxially), flattened to angular-flattened, longest central abaxial spine commonly twisted or curved (at times the only spine in depauperate specimens, those mostly from Big Bend region of Texas); major 0–5 adaxial spines divergent, ascending, brown to blackish and sometimes chalky, ± terete. <b>Glochids</b> adaxial in areole, yellow, to 4 mm. <b>Flowers</b>: inner tepals bright yellow, 25 mm; filaments green; style cream; stigma lobes pale yellow-green. <b>Fruits</b> yellow, aging gray, cylindric to ellipsoid, 20–25(–50) × 10–15 mm, becoming dry, spineless, glochidiate; areoles 25–35. <b>Seeds</b> yellowish to brownish, ± circular, to 5 mm in diam., with various numbers and sizes of bumps. <b>2n</b> = 22.</span><!-- |
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| | + | |phenology=Flowering spring (Mar–May). |
| | |habitat=Chihuahuan Desert, sandy or gravelly flats, scrub with creosote bush, lower slopes, limestone or igneous substrates | | |habitat=Chihuahuan Desert, sandy or gravelly flats, scrub with creosote bush, lower slopes, limestone or igneous substrates |
| | |elevation=600-1500 m | | |elevation=600-1500 m |
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| | |basionyms=Opuntia aggeria | | |basionyms=Opuntia aggeria |
| | |family=Cactaceae | | |family=Cactaceae |
| | + | |phenology=Flowering spring (Mar–May). |
| | |habitat=Chihuahuan Desert, sandy or gravelly flats, scrub with creosote bush, lower slopes, limestone or igneous substrates | | |habitat=Chihuahuan Desert, sandy or gravelly flats, scrub with creosote bush, lower slopes, limestone or igneous substrates |
| | |elevation=600-1500 m | | |elevation=600-1500 m |
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| | |publication year=1999 | | |publication year=1999 |
| | |special status= | | |special status= |
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V4/V4_230.xml | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V4/V4_230.xml |
| | |subfamily=Cactaceae subfam. Opuntioideae | | |subfamily=Cactaceae subfam. Opuntioideae |
| | |genus=Grusonia | | |genus=Grusonia |
| | |species=Grusonia aggeria | | |species=Grusonia aggeria |
| − | |2n chromosome count=22
| |
| − | |abaxial spine coloration=chalky white
| |
| − | |abaxial spine count=1;3
| |
| − | |abaxial spine orientation=deflexed
| |
| − | |abaxial spine shape=flattened;angular-flattened
| |
| − | |adaxial spine arrangement=divergent
| |
| − | |adaxial spine coloration=brown;blackish and sometimes chalky
| |
| − | |adaxial spine count=0;5
| |
| − | |adaxial spine orientation=ascending
| |
| − | |adaxial spine shape=terete
| |
| − | |areole arrangement or shape=circular
| |
| − | |areole count=25;35
| |
| − | |areole diam=3mm;4mm
| |
| − | |filament coloration=green
| |
| − | |fruit architecture=spineless
| |
| − | |fruit atypical length=25mm;50mm
| |
| − | |fruit coloration=gray;yellow
| |
| − | |fruit condition or texture=dry
| |
| − | |fruit length=20mm;25mm
| |
| − | |fruit life cycle=aging
| |
| − | |fruit pubescence=glochidiate
| |
| − | |fruit shape=cylindric;ellipsoid
| |
| − | |fruit width=10mm;15mm
| |
| − | |glochid coloration=yellow
| |
| − | |glochid position=adaxial
| |
| − | |glochid some measurement=0mm;4mm
| |
| − | |inner tepal coloration=bright-yellow
| |
| − | |inner tepal some measurement=25
| |
| − | |longest central abaxial spine architecture=twisted
| |
| − | |longest central abaxial spine course=curved
| |
| − | |longest central abaxial spine size=major
| |
| − | |number variability=various
| |
| − | |root length=7cm;8cm
| |
| − | |root shape=tuberlike
| |
| − | |root width=2.5cm;3cm
| |
| − | |seed arrangement or shape=circular
| |
| − | |seed coloration=yellowish;brownish
| |
| − | |seed diam=0mm;5mm
| |
| − | |shrub some measurement=3cm;9cm
| |
| − | |spine atypical count=1;5
| |
| − | |spine count=5;15
| |
| − | |spine size=major
| |
| − | |spine some measurement=3cm;5cm
| |
| − | |stem segment length=3.5cm;9cm
| |
| − | |stem segment shape=cylindric;clavate
| |
| − | |stem segment width=1.5cm;3cm
| |
| − | |stigma lobe coloration=pale yellow-green
| |
| − | |style coloration=cream
| |
| − | |tubercle atypical some measurement=18mm;22mm
| |
| − | |tubercle some measurement=8mm;18mm
| |
| − | |wool coloration=yellowish white
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Shrubs, forming clumps, 3–9 cm. Roots tuberlike, 7–8 × 2.5–3 cm. Stem segments short cylindric to clavate, 3.5–9 × 1.5–3 cm; tubercles 8–18(–22) mm; areoles circular 3–4 mm in diam.; wool yellowish white. Spines (1–)5–15 per areole, mostly in distal areoles, 3–5 cm; major 1–3 abaxial spines deflexed, usually chalky white (at least adaxially), flattened to angular-flattened, longest central abaxial spine commonly twisted or curved (at times the only spine in depauperate specimens, those mostly from Big Bend region of Texas); major 0–5 adaxial spines divergent, ascending, brown to blackish and sometimes chalky, ± terete. Glochids adaxial in areole, yellow, to 4 mm. Flowers: inner tepals bright yellow, 25 mm; filaments green; style cream; stigma lobes pale yellow-green. Fruits yellow, aging gray, cylindric to ellipsoid, 20–25(–50) × 10–15 mm, becoming dry, spineless, glochidiate; areoles 25–35. Seeds yellowish to brownish, ± circular, to 5 mm in diam., with various numbers and sizes of bumps. 2n = 22.
Phenology: Flowering spring (Mar–May).
Habitat: Chihuahuan Desert, sandy or gravelly flats, scrub with creosote bush, lower slopes, limestone or igneous substrates
Elevation: 600-1500 m
Distribution
Tex., Mexico (Coahuila).
Discussion
Grusonia aggeria is based on the “type” of “Opuntia grahamii × O. schottii” described by M. S. Anthony (1956). It is not a hybrid, however, between the two tetraploid putative parental taxa; it is instead a fully fertile, diploid species.
Selected References
None.
