Hemerocallis lilioasphodelus

Native to parts of southeastern Europe and from southwestern Siberia to Korea, this herbaceous perennial forms spreading clumps of narrow, arching leaves. Leafless stems carry fragrant, lemon-yellow, trumpet-shaped flowers, each lasting about a day. Successive buds extend the display in early summer. It grows from underground rhizomes and is cultivated in borders and perennial gardens. Established clumps can be divided to produce new plants. All parts are highly toxic to cats and can cause fatal kidney failure. Photographed in Colombia.