Tiny Tuesday . . . Unknown Flower

Invasive planting
Beautiful flower display
It's all relative


One of the neighbour's thought this flower is known as a poor mans orchid and in some places is considered an invasive plant.  I'm hoping the blip gardeners will identify the plant for me.  It has strap-like green leaves like a Renga Renga lily.  There is a large planting of them in a shady area but they don't appear to be anywhere else in the garden.