Hemerocallis lilioasphodelus

Hemerocallis lilioasphodelus (syn. Hemerocallis flava, known as lemon daylily, lemon lily, yellow daylily, and other names) is a plant of the genus Hemerocallis. It is found across China, in Europe in N.E. Italy and Slovenia and is one of the first daylilies used for breeding new daylily cultivars.