Bore da! A oes gwahaniaeth rhwng 'rhos' a rhostir'? Felly, beth ydy'r ffurf gywir i ddefnyddio yn y canlynol: (does bosib bod angen dweud 'porfa ros' ?!) /marshy //grassland which is commonly referred to as//*rhos*//pasture in Wales, is particularly important for invertebrates... //*Rhos*//pasture usually forms complex habitat mosaics which comprise wet heaths and fens/ / / Diolch, Dafydd --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus