A world key to species of the genus Bactrospora (Roccellaceae) with a new species from Brazil

The new corticolous lichen species Bactrospora angularis is described from Brazil. It has apothecia that are usually irregular in outline and transversely (19-)28-35-septate, filiform ascospores (85-)120-150 x 5-7 mu m with some constrictions. A revised world key is given to all currently known species of Bactrospora.