Achyrocline flaccida (Weinm) DC. (Asteraceae) is a medicinal plant species found in the original formation of grassy ecosystems, at forest edges, and in regions of vegetation regeneration in the southern portion of the Atlantic Forest. The species is herbaceous, popularly known as "Macela" and is the most common Achyrocline species in south and southeast Brazil. It is one of the most commonly used native plant species in folk medicine in South America . The infructescence of the species is used in tea preparations or infusions, and in pillows and blankets .