Frailea perumbilicata is a tiny solitary cactus with globular stems typically flattened and umbilicate above, (wider than taller). Frailea perumbilicata is considered by many a synonym of Frailea schilinzkyana. This two taxa are linked one to each other by plants with intermediate characteristics and shows similar features, namely size and form of stems, radial spines, flowers, fruit, etc., prove, that is impossible to differentiate between these taxa.
Habit: Frailea perumbilicata is a very small cactus that remains solitary or (occasiaonally) somewhat cespitose.