TROPICAL PLANT ENCYCLOPEDIA
Matucana madisoniorum, Submatucana madisoniorum
MatucanaFamily: Cactaceae
Origin: Peru
Sometimes individual plants may be almost entirely spineless, while other specimens are covered with spines or have spines missing on parts of the plant.
Link to this plant:
https://toptropicals.com/catalog/uid/matucana_madisoniorum.htm