|IIris ensata var.
spontanea is a perennial occurring in a swamp or damp grassland,
the rhizome branching out sideways to grow in colonies. The 5-12mm
long sword-shaped leaves erect 30-50cm in height, the mid-rib thick
and prominent. The flower stalk, 40-100cm long, bears some
red-purple flowers on the upper portion, the outer perianth having a
yellow spot at the base, which characterizes this species. Bloom