Taxonomic revision of the genus Schaueria (Acanthaceae)

The genus Schaueria (Acanthaceae) has not been comprehensively treated for more than 150 years. Here, we propose a recircumscription of Schaueria based on molecular phylogenetic results and present a taxonomic revision of the genus. We recognise 14 species, which occur mainly in semideciduous montan...

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Bibliographic Details
Published in:Plant systematics and evolution 2016-08, Vol.302 (7), p.819-851
Main Authors: Côrtes, Ana Luiza A., Daniel, Thomas F., Rapini, Alessandro
Format: Article
Language:English
Subjects:
Acanthaceae
Bar codes
Biomedical and Life Sciences
Bracts
Calyx
Corolla
Endangered species
Environmental quality
Forest habitats
Forests
Genera
Inflorescences
Lectotypes
Life Sciences
Montane environments
Mountain forests
New combinations
New species
Original Article
Phylogeny
Physical characteristics
Plant Anatomy/Development
Plant Ecology
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Pollen
Rainforests
Seeds
Stamens
Taxonomic revision
Taxonomy
Threatened species
Trichomes
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Summary:The genus Schaueria (Acanthaceae) has not been comprehensively treated for more than 150 years. Here, we propose a recircumscription of Schaueria based on molecular phylogenetic results and present a taxonomic revision of the genus. We recognise 14 species, which occur mainly in semideciduous montane forests, rain forests, and restingas, from Bahia to Rio Grande do Sul states, Brazil. Three new species are described in the genus—S. hirta, S. pyramidalis, and S. thyrsiflora—and six are excluded from the genus. Four new combinations and two new synonyms are proposed, and five lectotypes are designated. Many species of Schaueria are endangered, critically endangered or vulnerable, and two species are assessed as near threatened because of continuous decline of habitat quality and extent of Atlantic forest. We provide a key to identify the genera of the Tetramerium lineage that occur in South America, and present descriptions, illustrations, and comments for the 14 species of Schaueria, as well as a key to identify them.
ISSN:0378-2697
1615-6110
2199-6881
DOI:10.1007/s00606-016-1301-y