Hemerocallis L.
Rhizomatous perennials. Leaves all basal, sessile, distichous, linear, keeled. Scape tall, usually branched. Flowers large, yellow or reddish, in terminal corymbs; each flower shortly pedicellate, bract 1; perianth united below, funnel-shaped above with spreading or recurved lobes > tube. Capsule leathery, loculicidal, 3-angled. Spp. C. 20, of temperate Eurasia. Adventive sp. 1.
