Hemerocallis are herbaceous clump-forming perennials growing from rhizomes,^[4] some produce spreading stolons. They have a fibrous or fibrous-tuberous root system with contractile roots.^[5] The tuberous roots are used to store nutrients and water. The arching leaves are produced from the base of the plant (basal) and lack petioles,^[4] they are strap-like, long, linear lanceolate leaves and grouped into opposite fans. The crown is the small portion between the leaves and the roots. The large showy flowers are produced on scapes. The slightly irregular shaped flowers are arranged in helicoid cymes, or produced solitarily.^[4] The scapes of some species and cultivars produce small leafy proliferations arising from the nodes or in bracts. The proliferations are clones that root when planted.^[6]