
Two new species of Cybianthus subgenus Cybianthus are described and illustrated. Cybianthus nadruzii is recognized by its long, numerous, axillary and yellowish-green inflorescences. It is distinguished from C. cuneifolius Mart. by its elliptical leaves and long, numerous inflorescences. Cybianthus roseus is recognized by its long, terminal racemose and pink inflorescences. It is morphologically similar to C. nemoralis , but it can be distinguished by its paniculate inflorescences. These species are endemic to the Atlantic Forest remnants within the state of Rio de Janeiro municipalities of Santa Maria Madalena and Cardoso Moreira, respectively.
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