First record of Euphorbia pedersenii Subils (Euphorbiaceae) for Brazil 

Abstract

We report the first record of Euphorbia pedersenii (Euphorbiaceae) for Brazil, a rare species previously known from a few localities in Argentina. The species belongs to Euphorbia sect. Nummulariopsis and is characterized by its small habit with a well-developed tuberous root system, usually linear leaves, trapezoidal cyathial glands, and pubescent ovary and fruit. In the state of Rio Grande do Sul it grows in open grasslands of the Pampa region, a phytogeographic domain severely impacted by agriculture. We provide an assessment of the conservation status and geographical distribution and habitat of E. pedersenii, along with an identification key to the species of sect. Nummulariopsis occurring in Brazil.

Three new species of Euphorbia subgenus Chamaesyce (Euphorbiaceae) endemic to Brazil

“…Currently, 64 native species of Euphorbia are recorded for Brazil, half of them endemic to the country (Flora do Brasil 2020, in construction). Since the last complete treatment of the genus for Brazil (the monograph in Flora Brasiliensis by Müller Argoviensis 1874), additional new species and new occurrences have been published, even in the past few years (Carrillo-Reyes & Steinmann 2011;Carneiro-Torres et al 2012;Silva & Cordeiro 2015;Hurbath et al 2018;Küllkamp et al 2018;Silva et al 2020).…”

Euphorbia adenoplicata, a New Species of Euphorbia sect. Crossadenia from Brazil

“…Devecchi and Pirani 2015;Araújo et al 2016;Borges and Antar 2016;Moreira et al 2017;Alves et al 2018;Antar et al 2018;Mendoza and Martins 2018). In the genus Euphorbia in Brazil, novelties have been published during the last decade, including new species (Carrillo-Reyes and Steinmann 2011; Carneiro-Torres et al 2012; Silva and Cordeiro 2015;Hurbath et al 2018) and new records for the country (Külkamp et al 2018).…”