EUPHORBIA NOCENS, FORMERLY A VARIETY OF EUPHORBIA HIRTA (EUPHORBIACEAE)
Euphorbia hirta is a widespread species distributed throughout tropical and subtropical regions of the world. Four varieties of this taxon have been recognized, although many authors have chosen to treat one of these, Euphorbia hirta var. Procumbens, at the rank of species as E. ophthalmica. In this...
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| Format: | info:eu-repo/semantics/article |
| Language: | eng |
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2003
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| Online Access: | http://inecol.repositorioinstitucional.mx/jspui/handle/1005/371 |
| _version_ | 1799772205634027520 |
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| author | VICTOR WERNER STEINMANN |
| author_facet | VICTOR WERNER STEINMANN |
| author_sort | VICTOR WERNER STEINMANN |
| collection | REPO |
| description | Euphorbia hirta is a widespread species distributed throughout tropical and subtropical regions of the world. Four varieties of this taxon have been recognized, although many authors have chosen to treat one of these, Euphorbia hirta var. Procumbens, at the rank of species as E. ophthalmica. In this article it is argued that the varieties of Euphorbia hirta should indeed be treated as species. For this reason, Euphorbia hirta var. nocens is elevated to Euphorbia ocens. This species differs from E. hirta in possessing larger, darker-colored seeds and lomerules of cyathia that are restricted to the ends of the primary branches. It is endemic to Mexico and occurs at elevations of 1500 to 2400 m, primarily in pine-oak forest and resulting secondary vegetation. A morphological description of Euphorbia nocens is given, as well as a list of specimens examined. A key to separate this species from E. hirta, E. lineata, and E. ophthalmica is also provided. |
| format | info:eu-repo/semantics/article |
| id | repo-1005-371 |
| institution | Repositorio INECOL |
| language | eng |
| publishDate | 2003 |
| record_format | dspace |
| spelling | repo-1005-3712022-03-29T21:12:00Z EUPHORBIA NOCENS, FORMERLY A VARIETY OF EUPHORBIA HIRTA (EUPHORBIACEAE) VICTOR WERNER STEINMANN 2003-07-01 info:eu-repo/semantics/article Euphorbia hirta is a widespread species distributed throughout tropical and subtropical regions of the world. Four varieties of this taxon have been recognized, although many authors have chosen to treat one of these, Euphorbia hirta var. Procumbens, at the rank of species as E. ophthalmica. In this article it is argued that the varieties of Euphorbia hirta should indeed be treated as species. For this reason, Euphorbia hirta var. nocens is elevated to Euphorbia ocens. This species differs from E. hirta in possessing larger, darker-colored seeds and lomerules of cyathia that are restricted to the ends of the primary branches. It is endemic to Mexico and occurs at elevations of 1500 to 2400 m, primarily in pine-oak forest and resulting secondary vegetation. A morphological description of Euphorbia nocens is given, as well as a list of specimens examined. A key to separate this species from E. hirta, E. lineata, and E. ophthalmica is also provided. México librarians students researchers teachers info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/24 info:eu-repo/classification/cti/2417 info:eu-repo/classification/cti/241703 info:eu-repo/classification/cti/241703 https://abm.ojs.inecol.mx/index.php/abm/article/view/927 http://inecol.repositorioinstitucional.mx/jspui/handle/1005/371 info:eu-repo/semantics/datasetDOI/https://doi.org/10.21829/abm64.2003.927 info:eu-repo/semantics/altIdentifier/EISSN/2448-7589 info:eu-repo/semantics/openAccess eng http://creativecommons.org/licenses/by-nc-nd/4.0 info:eu-repo/semantics/publishedVersion application/pdf |
| spellingShingle | info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/24 info:eu-repo/classification/cti/2417 info:eu-repo/classification/cti/241703 info:eu-repo/classification/cti/241703 VICTOR WERNER STEINMANN EUPHORBIA NOCENS, FORMERLY A VARIETY OF EUPHORBIA HIRTA (EUPHORBIACEAE) |
| title | EUPHORBIA NOCENS, FORMERLY A VARIETY OF EUPHORBIA HIRTA (EUPHORBIACEAE) |
| title_full | EUPHORBIA NOCENS, FORMERLY A VARIETY OF EUPHORBIA HIRTA (EUPHORBIACEAE) |
| title_fullStr | EUPHORBIA NOCENS, FORMERLY A VARIETY OF EUPHORBIA HIRTA (EUPHORBIACEAE) |
| title_full_unstemmed | EUPHORBIA NOCENS, FORMERLY A VARIETY OF EUPHORBIA HIRTA (EUPHORBIACEAE) |
| title_short | EUPHORBIA NOCENS, FORMERLY A VARIETY OF EUPHORBIA HIRTA (EUPHORBIACEAE) |
| title_sort | euphorbia nocens formerly a variety of euphorbia hirta euphorbiaceae |
| topic | info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/24 info:eu-repo/classification/cti/2417 info:eu-repo/classification/cti/241703 info:eu-repo/classification/cti/241703 |
| url | http://inecol.repositorioinstitucional.mx/jspui/handle/1005/371 |
| work_keys_str_mv | AT victorwernersteinmann euphorbianocensformerlyavarietyofeuphorbiahirtaeuphorbiaceae |
