van den Boom, P. P. G. 2021 New records of Bacidina (Ramalinaceae) and Xenonectriella (Nectriaceae) from the Netherlands with special notes on some smaller Bacidina species. – Herzogia 34: 519 –523
Four easily overlooked species of Bacidina, B. chloroticula, B. etayana, B. mendax and B. saxenii, are treated from The Netherlands. Newly recorded from the Netherlands is B. mendax. Details of the ecology are given and morphology has been compared. Xenonectriella physciacearum is new to the Netherlands.