Abstract
Abstract: A taxonomic treatment of Dalechampia species found in the Brazilian Amazon is presented. The study was based on an analysis of herbarium material (including historical and type collections), specimens collected in the field, and literature. Twenty-three species, distributed in five sections, are recognized. Dalechampia hastata is endemic to the Brazilian Amazon. Among the species surveyed, thirteen species are considered to be Least Concern (LC), and not currently at risk of extinction. Six species (D. attenuistylus, D. brownsbergensis, D. fragrans, D. hastata, D. megacarpa and D. olympiana) are Endangered (EN), three species (D. gentryi, D. heterobractea and D. tenuiramea) are Near Threatened (NT), and D. liesneri is listed with Deficient Data (DD). If we consider the occurrence only in Brazil of three species , the taxa can be designated as Vulnerable (VU). Dalechampia micrantha and D. parvibracteata are lectotypified. The lectotype of D. cissifolia, D. juruana, and D. pernambucensis is clarified. New occurrences are reported for some countries. An identification key, descriptions, taxonomic comments, illustrations, the conservation status, phenological data, and geographic distribution maps are provided.
Highlights
Dalechampia L. (Euphorbiaceae) belongs to the subfamily Acalyphoideae Beilschm., tribe Plukenetieae (Benth.) Hutch. (Müller 1866, Pax & Hoffmann 1919), and it is the only genus in subtribe Dalechampiinae
This study documents 23 species of Dalechampia in the Brazilian Amazon, which are distributed in five sections: D. sect
Based on Prance (1988), Dalechampia species can be grouped into three distribution patterns: 1) widely distributed species
Summary
Dalechampia L. (Euphorbiaceae) belongs to the subfamily Acalyphoideae Beilschm., tribe Plukenetieae (Benth.) Hutch. (Müller 1866, Pax & Hoffmann 1919), and it is the only genus in subtribe Dalechampiinae Morphological studies focused on Dalechampia species in the Brazilian Amazon are non-existent It highlights general morphological aspects of taxa, the treatment by Webster and Armbruster (1991) does not provide descriptions or illustrations of many species, nor mention most of the analyzed collections, especially material collected in the Brazilian Amazon. This reflects the importance of carrying out this work for the region. Descriptions, taxonomic comments, illustrations, the conservation status, phenological data, and geographic distribution maps are provided
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
