Abstract
ABSTRACT The taxonomic revision of Amorimia (Malpighiaceae) is presented, including typifications, and descriptions for all accepted species. The genus is endemic to Seasonally Dry Tropical Forests and Rainforests of South America, and its species can be distinguished by morphological details of leaves, indumenta, inflorescences, flowers, and fruits. This study includes an identification key for the subgenera and species of Amorimia, illustrations, distribution maps, conservation risk assessments, and comments on ecology, nomenclature, and taxonomy for all species. Additionally, I provide a key to differentiate Amorimia from the remaining genera of the Malpighioid clade.
Highlights
This can be evidenced by the great number of specimens from different genera erroneously assigned to Mascagnia in most from the 93 visited herbaria
Amorimia is placed in the Malpighioid clade, a group combining all genera from the Malpighia clade + Amorimia and Ectopopterys
Taxonomy notes: Amorimia candidae is similar to A. pellegrinii and A. rigida, due to its sericeous-velutine leaf blades, with 4-8 pairs of secondary veins, parallel bracteoles, sepals appressed to the androecium, with straight apex at anthesis, elaiophores turning brown at post-anthesis, petal claws adaxially glabrous, patent lateral petals at anthesis, filaments glabrous, anthers pubescent at apex, connectives and base, and styles truncate at apex
Summary
The genus is monophyletic and currently placed in a basal grade in the Malpighioid clade (sensu Almeida et al 2017b), alongside Ectopopterys W.R. Anderson, Mascagnia (Bertero ex DC.) Bertero s.s., Calcicola W.R. Anderson & C.C. Davis, Malpighia L., and several paleotropical lineages After extensive field and herbarium studies, in association with additional molecular studies (Almeida et al 2017b), I presented new morphological, evolutionary and biogeographical data to the systematics of Amorimia (Almeida 2017). These systematic efforts paved the way for the elaboration of a new, comprehensive and updated taxonomic revision for the genus, presented. I provide a key to differentiate Amorimia from the remaining genera of the Malpighioid clade
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