A bit like an asphodel, making a grassy clump, with spikes of narrow violet flowers on slender stems in summer.
As far as I know it has no close relatives and is a bit of a botanical oddity. Nice though, in an understated way, and not at all difficult to grow in a well-drained spot in sun.
A common and widespread European alpine eventually making large clumps of deeply cut dark green foliage up to about 6ins high, with individual nodding white anemone flowers above. Easy and hardy in a sunny well-drained spot.