Difference between revisions of "Thelocactus bicolor var. bicolor"
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{{Treatment/ID | {{Treatment/ID | ||
|accepted_name=Thelocactus bicolor var. bicolor | |accepted_name=Thelocactus bicolor var. bicolor | ||
| − | |accepted_authority= | + | |accepted_authority= |
|publications= | |publications= | ||
|basionyms= | |basionyms= | ||
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|name=Thelocactus bicolor var. schottii | |name=Thelocactus bicolor var. schottii | ||
|authority=(K. Schumann) F. M. Knuth | |authority=(K. Schumann) F. M. Knuth | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Thelocactus bicolor var. tricolor | |name=Thelocactus bicolor var. tricolor | ||
| − | |authority= | + | |authority= |
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Cactaceae;Cactaceae subfam. Cactoideae;Thelocactus;Thelocactus bicolor;Thelocactus bicolor var. bicolor | |hierarchy=Cactaceae;Cactaceae subfam. Cactoideae;Thelocactus;Thelocactus bicolor;Thelocactus bicolor var. bicolor | ||
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|elevation=0-1200[-2000] m | |elevation=0-1200[-2000] m | ||
|distribution=Tex.;Mexico (Chihuahua;Coahuila;Durango;Nuevo León;San Luis Potosí;Tamaulipas;Zacatecas). | |distribution=Tex.;Mexico (Chihuahua;Coahuila;Durango;Nuevo León;San Luis Potosí;Tamaulipas;Zacatecas). | ||
| − | |discussion=<p><i>Thelocactus bicolor </i>var.<i> bicolor</i>, in the strict sense, may be limited to Mexico; if so, then < | + | |discussion=<p><i>Thelocactus bicolor </i>var.<i> bicolor</i>, in the strict sense, may be limited to Mexico; if so, then <i></i>var.<i> tricolor</i> and/or <i></i>var.<i> schottii</i> might deserve formal recognition.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Thelocactus bicolor var. bicolor | name=Thelocactus bicolor var. bicolor | ||
| − | + | |authority= | |
| − | |authority= | ||
|rank=variety | |rank=variety | ||
|parent rank=species | |parent rank=species | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V4/V4_407.xml |
|subfamily=Cactaceae subfam. Cactoideae | |subfamily=Cactaceae subfam. Cactoideae | ||
|genus=Thelocactus | |genus=Thelocactus | ||
Revision as of 22:40, 16 December 2019
Plants few branched or unbranched, usually not deep-seated in substrate. Stems usually ovoid to cylindric at maturity, 7.5–18(–38) × 5–10(–13) cm, surface very poorly concealed to 1/2 hidden by spines; ribs 8–13, tubercles confluent into rounded ribs 15–25 mm wide; areoles spaced 8–20 mm apart along ribs. Spines red and white (older spines weather to ashy white); radial spines 9–18 per areole, longest spines 12–30 mm; adaxial (bladelike) spines 16–75(–100) × 1.5 mm; central spines (1–)4, longest spines terete to sharply angular, then abaxially keeled and adaxially flat to grooved, (13–)20–45(–60) × 0.4–1.5 mm, adaxial 3 like radials but larger. 2n = 22.
Phenology: Flowering (Feb–May)Jul–Sep.
Habitat: Chihuahuan desert scrub, Tamaulipan thorn scrub, sedimentary, igneous, and alluvial substrates
Elevation: 0-1200[-2000] m
Distribution
Tex., Mexico (Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Tamaulipas, Zacatecas).
Discussion
Thelocactus bicolor var. bicolor, in the strict sense, may be limited to Mexico; if so, then var. tricolor and/or var. schottii might deserve formal recognition.
Selected References
None.