Is the Loasa genus or the Ferula genus more useful to humans?
Loasa Loasa is a genus of ornamental plants in the family Loasaceae. These plants are usually prickly herbs, or subshrubs, and they are native to tropical America.
Ferocactus Ferocactus is a genus of large barrel-shaped cacti, mostly with large spines and small flowers. There are about 30 species included in the genus. They are found in the southwestern United States and northwestern Mexico.