Argyreia and Dipcadi, have which mutual characteristic?
Argyreia Argyreia is a genus of plants in the Convolvulaceae family.
Argyroxiphium Argyroxiphium is a small genus of plants in the sunflower family, Asteraceae. Its members are known by the common names of silversword or greensword due to their long, narrow leaves and the silvery hairs on some species. It belongs to a larger radiation of over 50 species, including the physically different genera "Dubautia" and "Wilkesia". This grouping is often referred to as the silversword alliance.