Difference between revisions of "Euphorbia chaetocalyx var. triligulata"
Wrightia 5: 139. 1975.
Common names: Triligulate bristlecup sandmat
Conservation concern
Basionym: Euphorbia fendleri var. triligulata L. C. Wheeler Bull. Torrey Bot. Club 63: 445. 1936
Synonyms: Chamaesyce chaetocalyx var. triligulata (L. C. Wheeler) Mayfield
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|name=Euphorbia fendleri var. triligulata | |name=Euphorbia fendleri var. triligulata | ||
|authority=L. C. Wheeler | |authority=L. C. Wheeler | ||
| + | |rank=variety | ||
|publication_title=Bull. Torrey Bot. Club | |publication_title=Bull. Torrey Bot. Club | ||
|publication_place=63: 445. 1936 | |publication_place=63: 445. 1936 | ||
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|name=Chamaesyce chaetocalyx var. triligulata | |name=Chamaesyce chaetocalyx var. triligulata | ||
|authority=(L. C. Wheeler) Mayfield | |authority=(L. C. Wheeler) Mayfield | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Euphorbiaceae;Euphorbia;Euphorbia sect. Anisophyllum;Euphorbia chaetocalyx;Euphorbia chaetocalyx var. triligulata | |hierarchy=Euphorbiaceae;Euphorbia;Euphorbia sect. Anisophyllum;Euphorbia chaetocalyx;Euphorbia chaetocalyx var. triligulata | ||
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|elevation=600–900 m. | |elevation=600–900 m. | ||
|distribution=Tex.;Mexico (Coahuila). | |distribution=Tex.;Mexico (Coahuila). | ||
| − | |discussion=<p>Variety triligulata was described from the cliffs of Boquillas Canyon, on both sides of the Rio Grande in Texas and adjacent Coahuila, Mexico. The variety has elongate involucral gland appendages that are divided into three to five linear, straplike segments; it appears to represent a distinctive, localized population within the overall distribution of <i>Euphorbia chaetocalyx</i>. More generally, populations of <i>E. chaetocalyx</i> from elsewhere in northern Coahuila, Mexico, have similarly shaped involucral gland appendages and may represent additional populations of < | + | |discussion=<p>Variety triligulata was described from the cliffs of Boquillas Canyon, on both sides of the Rio Grande in Texas and adjacent Coahuila, Mexico. The variety has elongate involucral gland appendages that are divided into three to five linear, straplike segments; it appears to represent a distinctive, localized population within the overall distribution of <i>Euphorbia chaetocalyx</i>. More generally, populations of <i>E. chaetocalyx</i> from elsewhere in northern Coahuila, Mexico, have similarly shaped involucral gland appendages and may represent additional populations of <i></i>var.<i> triligulata</i>.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Euphorbia chaetocalyx var. triligulata | name=Euphorbia chaetocalyx var. triligulata | ||
| − | |||
|authority=(L. C. Wheeler) M. C. Johnston | |authority=(L. C. Wheeler) M. C. Johnston | ||
|rank=variety | |rank=variety | ||
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|publication year=1975 | |publication year=1975 | ||
|special status=Conservation concern | |special status=Conservation concern | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V12/V12_769.xml |
|genus=Euphorbia | |genus=Euphorbia | ||
|section=Euphorbia sect. Anisophyllum | |section=Euphorbia sect. Anisophyllum | ||
Latest revision as of 19:17, 5 November 2020
Leaf blades narrowly-ovate to linear-lanceolate, 3–11 × 0.8–3 mm. Involucral gland appendages straplike, divided into 3–5 linear segments, each 0.8–1.1 × 0.1 mm.
Phenology: Flowering and fruiting early summer–fall.
Habitat: Canyon walls, crevices in boulders.
Elevation: 600–900 m.
Distribution
Tex., Mexico (Coahuila).
Discussion
Variety triligulata was described from the cliffs of Boquillas Canyon, on both sides of the Rio Grande in Texas and adjacent Coahuila, Mexico. The variety has elongate involucral gland appendages that are divided into three to five linear, straplike segments; it appears to represent a distinctive, localized population within the overall distribution of Euphorbia chaetocalyx. More generally, populations of E. chaetocalyx from elsewhere in northern Coahuila, Mexico, have similarly shaped involucral gland appendages and may represent additional populations of var. triligulata.
Selected References
None.
Lower Taxa
None.