All Species in Iva
- Annual Marsh Elder (Iva annua)
- Fly Marsh Elder (Iva cheiranthifolia)
- Iva annua var. annua (Iva annua var. annua)
- Iva annua var. caudata (Iva annua var. caudata)
- Iva annua var. macrocarpa (Iva annua var. macrocarpa)
- Iva asperifolia var. asperifolia (Iva asperifolia var. asperifolia)
- Iva axillaris var. axillaris (Iva axillaris var. axillaris)
- Iva axillaris var. parvifolia (Iva axillaris var. parvifolia)
- Iva corbinii (Iva corbinii)
- Iva frutescens subsp. frutescens (Iva frutescens subsp. frutescens)
- Iva frutescens subsp. oraria (Iva frutescens subsp. oraria)
- Jesuit's Bark (Iva frutescens)
- Narrowleaf Marsh Elder (Iva asperifolia var. angustifolia)
- Pensacola Marsh Elder (Iva asperifolia)
- Piedmont Marsh Elder (Iva microcephala)
- Povertyweed (Iva axillaris)
- San Diego Povertyweed (Iva hayesiana)
- Seacoast Marsh Elder (Iva imbricata)
- Texas Marsh Elder (Iva texensis)