Fossombronia caespitiformis subsp. multispira has been found at Gozée (province of Hainaut, Belgium), 330 km outside its known range. This subspecies is characterised by elaters having 3-4 spirals. The plants from Gozée correspond well with the original description of Fossombronia husnotii, a synonym of this subspecies. As the rhizoids are purple, not colourless as those traditionally described for F. husnotii, rhizoid colour is not a reliable character to distinguish F. caespitiformis subsp. multispira.