Hieracium cusickii Hieracium albertinum Hieracium cynoglossoides var. cynoglossoides Hieracium praealtum var. decipiens Hieracium scouleri var. scouleri Hieracium scouleri var. albertinum Hieracium cynoglossoides Hieracium chapacanum Hieracium scouleri var. griseum Hieracium absonum Hieracium flettii
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024