Iva asperifolia, the Pensacola marsh elder, is a species of flowering plant in the family Asteraceae. It grows in the south-central United States (Kansas, Oklahoma, Arkansas, Texas, and Louisiana, with naturalized populations in Florida, Missouri, and Indiana). It has also been found in the state of Veracruz in eastern Mexico.Tropicos, Iva asperifolia Less.Biota of North America Program 2014 county distribution map
Iva asperifolia is a wind-pollinated herb up to 30 cm (1 foot) tall. It has lance-linear leaves, and many small nodding (hanging) flower heads in elongated arrays, each head with a few small flowers. Lessing, Christian Friedrich 1830. In: Linnaea 5(1): 151 in Latin
References