What type of category does Cassiope and Pediocactus have in common?
Pediocactus Pediocactus (Greek: πεδίον (pedion) means "plain", "flat", "field") is a genus of cacti. The genus comprises between 6 and 11 species, depending upon the authority. Species of this genus are referred to as hedgehog cacti, though that name is also applied to plants from the genera "Echinocereus" and "Echinopsis". Species may also be referred to as pincushion cacti, a common name which is also applied to other genera.
Prionochilus Prionochilus is one of two genera flowerpecker that make up the family Dicaeidae. The genus differs from the other flowerpecker genus, "Dicaeum" in having ten long primary feathers in the wing and in the character of its calls. A study comparing the calls of the two genera suggested that "Prionochilus" is basal to "Dicaeum". The genus contains six species, in contrast to the 38 species in the genus "Dicaeum". They have a more restricted distribution than "Dicaeum", occurring in the Philippines, Borneo, Suamtra, Java and the Malay Peninsula. The name "Prionochilus" is derived from the Greek "prion" for saw, and "kheilos" for lip, referring to the minute serrations along the edge of the bill.