Polaskia
 Polaskia (named after American amateur Charles Polaski) is a genus of tree-like cacti reaching 4–5 m high comprising 2 species. Both present primitive characteristics but Polaskia chichipe is nearer to Myrtillocactus while Polaskia chende is nearer to Stenocereus. The genus is found in the Mexican states of Puebla and Oaxaca.