New Xanthones from Comastoma pulmonarium and Their anti-Tobacco Mosaic Virus Activity. -Together with four known xanthones, pulmonarxanthone A (Ia) and B (IIb) are isolated. All compounds are shown to exhibit weak anti-tobacco mosaic virus activity. -(LI*, L.-M.; et al.; Heterocycles 91 (2015) 3, 604-609, http://dx.