Taxon - Odkazy a literatura
IUCN Red List of Threatened Species 2024-1 [107424022]
IUCN Red List of Threatened Species [http://www.iucnredlist.org/] [jako Conyza varia (Webb) Wild]
Datum citace: 29. leden 2024
Kew Science - Plants of the World online 2024-05 [234473-1]
Kew Science - Plants of the World online [https://powo.science.kew.org], Facilitated by the Royal Botanic Gardens, Kew [jako Nidorella varia (Webb) J.A.Schmidt]
Datum citace: 31. leden 2025