Six species of Candelariella with polysporous asci are recognized from western North America. The species are: C. borealis sp. nov., C. efflorescens, C. lutella, C. placodizans, C. vitellina and C. xanthostigma. Candelariella vitellina is lectotypified. A key to the polysporous species in western North America is provided and their distribution in the study area is mapped.
the polysporous species ," The Bryologist 110(3), 375-390, (1 September 2007). https://doi.org/10.1639/0007-2745(2007)110[375:CCIWUS]2.0.CO;2