Menegazzia cincinnata

Menegazzia cincinnata is a species of foliose lichen from southern South America. It was first scientifically described by Swedish lichenologist Erik Acharius as Parmelia cincinnata. Friedrich [August Georg Bitter] transferred it to the genus Menegazzia in 1901.
Menegazzia cincinnata is quite similar in morphology to Menegazzia valdiviensis, but the two species can be distinguished from each other by a combination of ascospore length and the presence or absence of thamnolic acid in the medulla.