Helianthus maximilliani
Same genus
- Sunflower (Helianthus annuus)
- Fewleaf sunflower (Helianthus occidentalis)
- Jerusalem artichoke (Helianthus tuberosus)
- Southeastern sunflower (Helianthus agrestis)
- Swamp sunflower (Helianthus angustifolius)
- Western sunflower (Helianthus anomalus)
- Silverleaf sunflower (Helianthus argophyllus)
- Arizona sunflower (Helianthus arizonensis)