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| Aymard C., G.A.; Ireland, H.E.. |
| A new species, Bocoa marionii, from the Upper Essequibo region, Guyana, is described and illustrated and its relationships with allied species are discussed. It is morphologically similar to B. prouacensis, from which it differs in its chartaceous leaflets, shorter inflorescences borne among leaves, longer pedicels, calyx that is strigose along the middle of the segments internally, and ovary densely yellow-sericeous. A key to the species of Bocoa is provided. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Bocoa; Guayana Shield; Guyana; Leguminosae-Swartzieae; Taxonomy; Tropical South America. |
| Ano: 2010 |
URL: http://www.repository.naturalis.nl/record/524774 |
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| Gröger,Andreas; Huber,Otto. |
| The Guayana Shield, located in north-eastern South America, consists of a highly complex and composite mosaic of landscape elements. Amongst these, inselbergs are very conspicuous, because of their peculiar shape and their unusual associated vegetation. Geologically, these rock outcrops are part of the underlying ancient igneous-metamorphic basement and occur mainly in the lowlands of the periphery of the shield. As azonal habitats, inselbergs harbour a highly specialized flora. The characteristic vegetation is composed of lithophytic and savanna-like plant communities, as well as low dry forests. As a whole, the vegetation of an inselberg may be interpreted as a mosaic of marginal habitats. Therefore a large number of taxa find suitable niches in a quite... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endemism; Flora; Guayana Shield; Inselberg; Phytogeography; Venezuela. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000400006 |
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