"Species Details - Helianthus rydbergii Britton, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/1-23609. Accessed 12 May. 2024.
Specimen Information
There are 2 specimens of this Species.
2 results plotted on map in 2 markers. Note: Only records with latitude and longitude coordinates are plotted on map.