I don’t know what they are, but they’re certainly pretty
Every spring, these flowers (and a corresponding patch on the other side of our front steps) shoot out masses of glossy green leaves, which live for about a month and then fall over dead. Three or four months later, after the leaves have appropriately fertilised the soil, these flowers spring up, blossom, and then fall over dead within about a week and a half.
It’s a pretty terrible place for most plants – there are a couple of sweetgum trees and flowering bushes that keep the front steps in perpetual shadow – but these odd little flowers seem to enjoy it.