When hybridizers register their daylilies they can check off if the blooms are fragrant or very fragrant. The AHS database is searchable for this and provides another listing to look at for fragrant daylilies. On the page below click the red letter "click here for Advanced Search" on the right, then scroll down to the check boxes for "Fragrance".
http://www.daylilies.org/Dayli...
