What type of category does Stachyurus and Pleioblastus have in common?
Pleioblastus Pleioblastus is a, East Asian genus of monopodial bamboos in the grass family. They are native to China and Japan, and naturalized in scattered places in Korea, Europe, New Zealand, and the Western Hemisphere.
Pterygotus Pterygotus is a genus of marine arthropod within the extinct order eurypterida (or "Sea Scorpion"), and includes some of the largest species of this group.