| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000420131 |
| ISSN: | 0001-3765 |
| Authors: | Miguel, Laila M1 Sobrado, Sandra V2 Janssens, Steven3 Dessein, Steven3 Cabral, Elsa L2 |
| Institutions: | 1Instituto de Botánica del Nordeste, Corrientes. Argentina 2Universidad Nacional del Nordeste, Facultad de Ciencias Exactas y Naturales y Agrimensura, Corrientes. Argentina 3Botanic Garden Meise, Meise. Bélgica |
| Year: | 2018 |
| Season: | Jun |
| Volumen: | 90 |
| Number: | 2 |
| Pages: | 1397-1415 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | Diacrodon is a monotypic genus of the tribe Spermacoceae (Rubiaceae), endemic to northeastern Brazil. Diacrodon compressus is frequently misidentified with a two lobed calyx species of Borreria, B. verticillata. Traditionally, in Spermacoceae the fruit type was considered a diagnostic character among the genera. In this sense, D. compressus presents a strongly compressed, one seeded and indehiscent fruit (vs. globose, two seeded and dehiscent fruit in B. verticillata). In this work, we address two objectives: evaluate the systematic position and determine the identity of Diacrodon in respect to other taxa. Molecular analyses using ITS and ETS indicate that D. compressus is strongly related to other species of Borreria. The morphological results revealed that D. compressus, despite of its type of fruit, is identical to Borreria in floral and palynological features. As conclusion, the new combination Borreria diacrodonta is made and a lectotype is designated. An updated description of the species and a key to the Borreria species with a two lobed calyx are provided. The distribution of B. diacrodonta is extended to Brazilian states Goiás and Minas Gerais, and Paraguay. By this taxonomical change it has become clear that the dehiscence of the fruits lack taxonomic value in the delimitation of Borreria |
| Disciplines: | Biología |
| Keyword: | Botánica, Taxonomía y sistemática, Evolución y filogenia, Flores, Frutos, Conjunto de datos ITS-ETS, Morfología, Polen, Semillas, Diacrodon compressus, Borrelia spinosa |
| Keyword: | Botany, Taxonomy and systematics, Evolution and phylogeny, Flowers, Fruits, ITS-ETS dataset, Morphology, Pollen, Seeds, Diacrodon compressus, Borrelia spinosa |
| Full text: | Texto completo (Ver PDF) |
