Arcanodiscus platti Maidana & E.Morales Arcanodiscus platti Maidana & E.Morales in Beih. Nova Hedwigia 146: 66. 3 Jan 2018is orthographic variant for Arcanodiscus plattii11. Dedicated to the memory of Dr. J. Platt Bradbury (1936–2005), with whom the senior author found A. platti in Lago Cardiel for the first time.