Abstract
Porophyllum spathulatum is described and illustrated. The new species is distinguished by its decumbent habit, spatulate leaves and large heads bearing pale yellow florets. According to the collector’s information given on the labels, the plant was successfully recollected and is known to occur only in Balneário Hermenegildo, Santa Vitória do Palmar, Rio Grande do Sul, southernmost Brazil. Additionally, conservation status and ecological information about the new species are provided.