title: Identification of Hymenoxon in Baileya multiradiata and Helenium hoopsii.
mesh_terms: D007783:Lactones / Q000032:analysis; D013058:Mass Spectrometry; D008722:Methods; D010936:Plant Extracts / Q000032:analysis; D010947:Plants, Toxic / Q000032:analysis*; D012717:Sesquiterpenes / Q000032:analysis*; D013781:Texas
chemical_list: D007783:Lactones; D010936:Plant Extracts; D012717:Sesquiterpenes