30". 1 or more showy yellow flowers on a sturdy stalk among tall, sword-like leaves.

4", with petal-like parts in threes: sepals large, back-curved; petals smaller, narrow, upright; styles fringed, arched over sepals.

Leaves stiff, rise from basal cluster. Often forms clumps.

Fruit

Height

Flowering

Pondsides, streamsides, marshes, ditches

Comments:

Introduced from Europe as a garden plant; escaped cultivation. Blooms