Iva microcephala, the piedmont marsh elder,[1] is a North American species of flowering plants in the family Asteraceae.

It grows in the southeastern United States in Alabama, Florida, Georgia, and the Carolinas.

[2] Iva microcephala is a wind-pollinated annual herb sometimes as much as 100 cm (40 inches) in height.

Leaves are very narrow, sometimes thread-like, up to 6 cm (2.4 inches) long.

Flower heads are small, clustered in elongated arrays at the tips of branches, each head containing only about 5-8 flowers.