Hemerocallis 'Frans Hals' with veronica behind.
Hemerocallis are often known as daylilies although they are not lilies at all. The name daylily comes from the Greek words 'hemera' (day) and 'kalos' (beautiful). Hemerocallis are native to Asia. The flowers open at sunrise and wither at sunset and are often replaced by another bloom on the same stem the following day.They are not generally scented.
This shot clearly shows the buds that are yet to ripen and bloom.
Hemerocallis grow from fleshy roots and form clumps. They are perennial.
This is a true lily, also perennial, and in this photograph hosting a bright fly, possibly a hoverfly. Enlarge for detail if you can bear it!