Rohdea Roth was long thought to contain only a single species, R. japonica but recently other taxa were transferred to this genus. Once in the Liliaceae family, it is now considered to be in the expanded Asparagaceae family.
Rohdea japonica (Thunb.) Roth is the type species of this genus. Native to Japan, China and Korea, its common names include Nippon lily, sacred lily, and Japanese sacred lily. It is a rhizomatous herbaceous perennial plant, with fibrous roots. The leaves are evergreen, broad lanceolate, 15–50 cm long and 2.5–7 cm broad, with an acute apex. Source: Wikipedia. There is an interesting article written by Tony Avent about this species. Photograph by Judy Glattstein.