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 small hardy Chinese relative of the common spider plant with similar narrow grassy leaves (not variegated) and sprays of small white flowers. Pretty in a very understated way - rather like an Anthericum
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.
Masquerading as a low grey rush or sheep's fescue, this mop-top suddenly bursts into life in late spring with bright blue flowers at the tips of its ‘leaves’. (The name means something like 'flowers without leaves')