Longoza, sometimes called White Ginger Lily, this plant emits a fresh, inviting, white flowery scent. Known as a remedy for headaches and inflammations in traditional medicine, this plant is an invasive species in Southern Africa, while being threatened by extinction in India.
See also:
en.wikipedia.org/wiki/Hedychium_coronarium
fr.wikipedia.org/wiki/Hedychium
edis.ifas.ufl.edu/fp240