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2023
Journal article
The study of pollen grains as a contribution to the taxonomy of Nissolia (Leguminosae – Papilionoideae – Dalbergieae).
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2020
Journal article
954. DELONIX REGIA
Delonix regia (Bojer ex Hook.) Raf. (Leguminosae), a red‐flowered, bird‐pollinated, showy tree, endemic to Madagascar, is described and illustrated for the second time in Curtis's Botanical Magazine, since it first featured in 1829.Lewis, Gwilym
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2019
Journal article
Evolutionary convergence or homology? Comparative cytogenomics of Caesalpinia group species (Leguminosae) reveals diversification in the pericentromeric heterochromatic composition
The Caesalpinia Group includes 225 species and 27 monophyletic genera of which four occur in Northeastern Brazil: Erythrostemon (1 sp.), Cenostigma (7 spp.), Libidibia (1 sp.), and Paubrasilia (1 sp.). The last three genera are placed in different clades in the Caesalpinia Group phylogeny, and yet they are characterized by... -
2019
Journal article
Resolving nomenclatural ambiguity in South American Tephrosia (Leguminosae, Papilionoideae, Millettieae), including the description of a new species
Taxonomic studies of Tephrosia Pers. (Leguminosae, Papilionoideae, Millettieae) in South America have highlighted the need to resolve some nomenclatural issues. Five new synonyms are proposed and a new species is described. Nine lectotypes of accepted names and synonyms, and one neotype, are here designated. An identification key to the taxa...de Queiroz, R. T. ; de Moura, T. M. ; Gereau, R. E. ; Lewis, Gwilym ; de Azevedo Tozzi, A. M. G.
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2019
Journal article
Phylogeny and divergence time estimation of Chamaecrista ser. Rigidulae (Leguminosae: Caesalpinioideae)
Chamaecrista is a monophyletic genus, but most of its infrageneric categories have been shown to be paraphyletic, including series Rigidulae which currently comprises 30 species, all endemic to Brazil and most occurring in the cerrado vegetation of the central highlands of the country. This molecular phylogenetic study tests the monophyly...de Souza Alessandro, Oliveira ; Lewis, Gwilym ; Telles, Mariana ; da Silva, Marcos
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2019
Journal article
Do tropical plants have smaller genomes? Correlation between genome size and climatic variables in the Caesalpinia Group (Caesalpinioideae, Leguminosae)
While a number of studies have suggested that temperate plants typically have larger genome sizes (GS) than tropical ones, recent analyses have not convincingly confirmed this. We have selected the widely distributed Caesalpinia Group (Leguminosae) to test this hypothesis. We used flow cytometry to estimate the amount of DNA in...Souza, Gustavo ; Costa, Lucas ; Guignard, Maïté ; Van-Lume, Brena ; Pellicer, Jaume …
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2019
Journal article
Characteristics of the exine and aperture of pollen grains of Eriosema and Rhynchosia (Leguminosae – Papilionoideae – Phaseoleae)
The genera Eriosema and Rhynchosia, which comprise approximately 150 and 230 species, respectively, belong to the tribe Phaseoleae and to the subtribe Cajaninae. The pollen morphology of 49 species of Eriosema and 13 of Rhynchosia were studied using scanning electron microscopy to identify diagnostic characteristics that could aid in the...Oliveira, Ana ; De Borges, Ricardo ; Perez, Ana ; Lewis, Gwilym ; Silva, Juliana