Billy's hawkweed (Pilosella billyana)
Same genus
- Mouseear hawkweed (Pilosella officinarum)
- Tall hawkweed (Pilosella piloselloides)
- Flagellate hawkweed (Pilosella flagellaris)
- Meadow hawkweed (Pilosella caespitosa)
- Cymose hawkweed (Pilosella cymosa)
- European hawkweed (Pilosella lactucella)
- Orange hawkweed (Pilosella aurantiaca)
- Roughstem hawkweed (Pilosella friesii)