What type of plants are Desfontainia and Tithonia?
Desfontainia: Desfontainia is a genus of flowering plants placed currently in the family Columelliaceae, though formerly in Loganiaceae, Potaliaceae (now subsumed in Gentianaceae), or a family of its own, Desfontainiaceae. Tithonia: Tithonia is a genus of flowering plants in the sunflower tribe within the Asteraceae family.
flowering