The abundance of clear yellow blooms are hard to ignore 

Hemerocallis citrina is a lovely and highly scented daylily species. Star shaped yellow flowers that are nocturnal (so fully open in the morning) in nature and very prolific. A classic you must have in your garden. RHS Award of Garden Merit.

6" Bloom diameter. 40" Scape height. Mid bloom season. Dormant winter foliage.