Evidently the authors in the original publication may have confused (-)-16 α-hydroxykaurane with zeorin. A correction by Spjut was noted on World botanical Associates web page. In 2004, Bowler and Marsh retained the species in "Niebla", while also indicating that secondary metabolites were usnic acid and unidentified triterpenes. The triterpene zeorin is frequently absent or in trace amounts in a number of species in the subgenus "Vermilacinia", whereas (-)-16 α-hydroxykaurane is found in all species taking into the correction. The absence of the diterpene has been reported in the subgenus "Cylindricaria" for two species in North America.