Arnaldoa
Arnaldoa is a genus of flowering plants in the aster family, Asteraceae. It is native to Ecuador and Peru.
These plants are shrubs with spines, and prickles|spines] located at the attachment point of each leaf to the stem. The flower heads contain disc florets in shades of orange, orange-red, purple, or cream and the pappus-tufted fruits are adapted for wind dispersal. The plants grow on dry, wooded or shrubby slopes at elevations between 1370 and 3000 metres.
; Species
- Arnaldoa argentea C.Ulloa, P.Jørg. & M.O.Dillon - up to 3.5 meters tall with light orange or cream-colored florets
- Arnaldoa coccinosantha Ferreyra - Peru
- Arnaldoa macbrideana Ferreyra - purple florets
- Arnaldoa weberbaueri Ferreyra - bright orange-red or occasionally purple florets up to 5 centimeters long