Iva is a genus of wind-pollinated plants in the family Asteraceae, described as a genus by Linnaeus in 1753.Linnaeus, Carl von. 1753. Species Plantarum 2: 988-989 in Latin Plants of this genus are known generally as marsh elders. The genus is native to North America.Flora of North America, Vol. 21 Page 25 Marsh elder Iva Linnaeus, Sp. Pl. 2: 988. 1753; Gen. Pl. ed. 5, 426. 1754.
Accepted speciesThe Plant List search for IvaBiota of North America Program 2013 county distribution maps Iva angustifolia - southeastern + south-central United States (Texas Oklahoma Louisiana Arkansas Kansas Florida) Iva annua - United States, primarily south-central region; Tamaulipas Iva asperifolia - south-central United States (Texas Oklahoma Louisiana Arkansas Kansas Indiana), Veracruz Iva axillaris - western United States + Canada Iva cheiranthifolia - Cuba Iva corbinii B.L. Turner - TexasTurner, Billie Lee. 2009. Iva corbinii (Asteraceae), a remarkable new species from Travis County, Texas. Lundellia 12:5-7 includes color photo of type specimen and another of the plant in the field Iva dealbata - United States (Texas New Mexico), Mexico (Chihuahua, Coahuila, Nuevo León, San Luis Potosí)Tropicos, Iva dealbata A. Gray Iva frutescens - coastal areas from Texas to Nova Scotia Iva hayesiana - California, Baja California Iva imbricata - coastal areas from Texas to Virginia; BahamasTropicos, Iva imbricata Iva microcephala - southeastern United States (Alabama Florida Georgia North Carolina South Carolina) Iva xanthiifolia (synonym Cyclachaena xanthiifolia) - widespread in United States + Canada, introduced elsewhere
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