Parodia leninghausii (Yellow Tower)
Botanical names: Parodia leninghausii, Notocactus leninghausii
Common name: Yellow Tower
Family: Cactaceae
Origin: Southern Brazil
Similar plants: Parodia leninghausii (Yellow Tower)
Link to this plant:
https://toptropicals.com/catalog/uid/parodia_leninghausii.htm