Euphorbia nocens, formerly a variety of euphorbia hirta (euphorbiaceae)
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| Format: | Artículo científico |
| Sprache: | en |
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Instituto de Ecología, A.C.
2003
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| _version_ | 1876438723873210368 |
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| author | Victor W. Steinmann |
| author_facet | Victor W. Steinmann |
| contents | Euphorbia nocens, formerly a variety of euphorbia hirta (euphorbiaceae) Victor W. Steinmann Biología Mexico Euphorbiaceae Euphorbia hirta Euphorbia nocens subgenus Chamaesyce Euphorbia hirta is a widespread species distributed throughout tropical andsubtropical regions of the world. Four varieties of this taxon have been recognized, althoughmany authors have chosen to treat one of these, Euphorbia hirta var. procumbens, at therank of species as E. ophthalmica. In this article it is argued that the varieties of Euphorbiahirta should indeed be treated as species. For this reason, Euphorbia hirta var. nocens iselevated to Euphorbia nocens. This species differs from E. hirta in possessing larger, darkercoloredseeds and glomerules of cyathia that are restricted to the ends of the primarybranches. It is endemic to Mexico and occurs at elevations of 1500 to 2400 m, primarilyin pine-oak forest and resulting secondary vegetation. A morphological description ofEuphorbia nocens is given, as well as a list of specimens examined. A key to separate thisspecies from E. hirta, E. lineata, and E. ophthalmica is also provided. 2003 artículo científico 0187-7151 https://www.redalyc.org/articulo.oa?id=57406405 en http://www.redalyc.org/revista.oa?id=574 Acta Botanica Mexicana application/pdf Instituto de Ecología, A.C. Acta Botanica Mexicana (México) Num.64 |
| format | Artículo científico |
| id | redalyc_57406405 |
| institution | Redalyc |
| language | en |
| publishDate | 2003 |
| publisher | Instituto de Ecología, A.C. |
| spellingShingle | Euphorbia nocens, formerly a variety of euphorbia hirta (euphorbiaceae) Victor W. Steinmann Biología Mexico Euphorbiaceae Euphorbia hirta Euphorbia nocens subgenus Chamaesyce Euphorbia nocens, formerly a variety of euphorbia hirta (euphorbiaceae) Victor W. Steinmann Biología Mexico Euphorbiaceae Euphorbia hirta Euphorbia nocens subgenus Chamaesyce Euphorbia hirta is a widespread species distributed throughout tropical andsubtropical regions of the world. Four varieties of this taxon have been recognized, althoughmany authors have chosen to treat one of these, Euphorbia hirta var. procumbens, at therank of species as E. ophthalmica. In this article it is argued that the varieties of Euphorbiahirta should indeed be treated as species. For this reason, Euphorbia hirta var. nocens iselevated to Euphorbia nocens. This species differs from E. hirta in possessing larger, darkercoloredseeds and glomerules of cyathia that are restricted to the ends of the primarybranches. It is endemic to Mexico and occurs at elevations of 1500 to 2400 m, primarilyin pine-oak forest and resulting secondary vegetation. A morphological description ofEuphorbia nocens is given, as well as a list of specimens examined. A key to separate thisspecies from E. hirta, E. lineata, and E. ophthalmica is also provided. 2003 artículo científico 0187-7151 https://www.redalyc.org/articulo.oa?id=57406405 en http://www.redalyc.org/revista.oa?id=574 Acta Botanica Mexicana application/pdf Instituto de Ecología, A.C. Acta Botanica Mexicana (México) Num.64 |
| title | Euphorbia nocens, formerly a variety of euphorbia hirta (euphorbiaceae) |
| topic | Biología Mexico Euphorbiaceae Euphorbia hirta Euphorbia nocens subgenus Chamaesyce |
| url | https://www.redalyc.org/articulo.oa?id=57406405 |