I find the calla lily (Zantedeschia aethiopica) a very elegant and photogenic specimen. They’re native to southern Africa, but have made their way around the world to places such as California and Australia. Australia classifies them as pests and toxic weeds. Hey Australia, that’s no way to treat a visitor!
This bunch of lilies is growing against one of the old, military buildings in Fort Baker. (Note the red-roof: it’s a signature architectural feature of the structures inside this park).