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August 16, 2026Nordic Journal of BotanyOpen Access

Two new endemic species of Portulaca (Portulacaceae) from the Brazilian Pampa grasslands

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Authors

JFJOSÉ ROBERTO FERRAZBMBárbara Pinheiro MoreiraJBJoão Marcelo Alvarenga Braga

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Overview

Taxonomic investigation reveals two new endemic Portulaca species in the Brazilian Pampa, highlighting the urgent need to protect threatened grassland habitats.

Key Points

  • Formally identify, describe, and classify two newly discovered endemic succulent plant species of the genus Portulaca from the Brazilian Pampa grasslands.
  • Analyzed morphological characters across vegetative and reproductive structures, including roots, leaf blades, involucral leaves, petals, stamens, stigmas, and capsules.
  • Documented taxonomic descriptions, line drawings, photographs, geographic distribution, phenology, habitat characteristics, and conservation status while creating a regional identification key.
  • Formally described two new endemic species, Portulaca guaritensis and Portulaca guenoa, distinguished by unique combinations of floral and vegetative morphological traits.
  • Increased the total number of documented Portulaca species in Brazil to 25, emphasizing the urgent need for field conservation in Pampa grasslands facing land-use change.

Cite This Study

FERRAZ et al. (2026) studied this question.

synapsesocial.com/papers/6a8179abf2fb91fc834acdf6https://doi.org/10.1002/njb.05276
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