The Bishop’s Miter Cactus
Astrophytum myriostigma (Caryophyllales - Cactaceae), also known as Bishop’s Cap Cactus, Bishop’s Hat or Bishop’s Miter Cactus, is a cactus endemic to Mexico with distribution in Coahuila, Durango, Nuevo Leon, Tamaulipas, San Luis Potosi and probably north of Zacatecas.
Astrophytum myriostigma is a globose, perennial succulent, green with white dots and yellow flowers. The presence of puffs (glochidia) in the epidermis gives whitish and greyish colorations.
It is a spineless cactus which is defined by the presence of three to seven (usually five) pronounced vertical ribs.
In Mexico there are about 669 species of cacti (518 endemic), almost 50% of the approximately 1,400 species of cacti in the world [source].
Photo’s credit: Top - ©Evaldo Nascimento | Bottom - ©Eric Hunt