When we were at the conference in the Algarve which was a great success we visited the Estoi Palace. In a grotto under the steps was this depiction of what is obviously meant to be a monocot and someone suggested Scilla peruviana. I think that it is perhaps too stylised to really know though I wondered whether it could be a Crinum or a South African Amaryllid. Note that the presumed monocot flowers all have five segments!