The NHMO DNA Bank Fungi and Lichens collection at the Natural History Museum in Oslo (NHMO), Norway contains mainly tissue and extracted DNA samples of fungi and lichens. Most of these have been taken from voucher specimens in the fungi or lichen herbaria at NHMO (herbarium code 'O' [Botanical Museum, University of Oslo], collection codes F and L, respectively) or other herbaria, while others have been sampled from unvouchered specimens.The collection is databased in Corema, a software that has been developed in close cooperation between the NHMO and the developer, Compositae AS (https://www.coremadb.com/). An accession generally refers to a given individual at a specific place and time; for each accession, one or more items may exist.