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Issue: Vol. 701 No. 3: 20 May 2025
Type: Article
Published: 2025-05-20
DOI: 10.11646/phytotaxa.701.3.5
Page range: 271-278
Abstract views: 250
PDF downloaded: 20

Dalechampia nivea (Euphorbiaceae), a new species from Brazil

Instituto de Pesquisas Ambientais, Unidade Jardim Botânico, Programa de Pós-Graduação em Biodiversidade Vegetal e Meio Ambiente, SP Herbarium, Av. Miguel Stéfano, 3687, 04301-902, São Paulo, São Paulo, Brazil; Universidade de São Paulo, Instituto de Biociências, Departamento de Botânica, SPF Herbarium, Rua do Matão, 277, 05508-900, São Paulo, São Paulo, Brazil
Universidade Estadual de Feira de Santana, Programa de Pós-Graduação em Botânica, HUEFS Herbarium, Av. Transnordestina, Novo Horizonte, 44036-900, Feira de Santana, Bahia, Brazil
Instituto de Pesquisas Ambientais, Unidade Jardim Botânico, Programa de Pós-Graduação em Biodiversidade Vegetal e Meio Ambiente, SP Herbarium, Av. Miguel Stéfano, 3687, 04301-902, São Paulo, São Paulo, Brazil
Instituto de Pesquisas Ambientais, Unidade Jardim Botânico, Programa de Pós-Graduação em Biodiversidade Vegetal e Meio Ambiente, SP Herbarium, Av. Miguel Stéfano, 3687, 04301-902, São Paulo, São Paulo, Brazil; Universidade de São Paulo, Instituto de Biociências, Departamento de Botânica, SPF Herbarium, Rua do Matão, 277, 05508-900, São Paulo, São Paulo, Brazil
Acalyphoideae Bahia Dalechampia sect. Dioscoreifoliae Taxonomy Eudicots

Abstract

We describe Dalechampia nivea, a new species from high-altitude regions (700–1,190 m) within the rainforests of the Atlantic Forest domain. This species has been recorded in the states of Bahia, Espírito Santo, and Minas Gerais in eastern Brazil. Dalechampia nivea shares morphological similarities with D. pentaphylla, including leaves with five leaflets and pistillate flower calyx with six entire sepals. However, it can be distinguished by the 3-lobed involucral bracts with entire to serrated margins, lanceolate to ovate bracteal stipules, and tomentose ovary. In contrast, D. pentaphylla has 5-partite involucral bracts with lacerate margins, broadly ovate to reniform bracteal stipules, and pilose to pubescent ovary. This article includes detailed photographs, distribution maps, comments on the habitat, and a preliminary assessment of the species’ conservation status. An identification key for the Brazilian Dalechampia vines with compound or palmatisect leaves divided into five partitions is also provided.

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How to Cite

Brigato, L.O., Carneiro-Torres, D.S., Cordeiro, I. & Silva, O.L.M.D. (2025) Dalechampia nivea (Euphorbiaceae), a new species from Brazil. Phytotaxa 701 (3): 271–278. https://doi.org/10.11646/phytotaxa.701.3.5