Rimose

Rimose is an adjective used to describe a surface that is cracked or fissured.

[1] Areolate is an extreme form of being rimose, where the cracks or fissures are so deep that they create island-like pieces called areoles, which look the "islands" of mud on the surface of a dry lake bed.

[1] Rimose and areolate are contrasted with being verrucose, or "warty".

[1] Verrucose surfaces have warty bumps which are distinct, but not separated by cracks.

[1] In mycology the term describes mushrooms whose caps crack in a radial pattern, as commonly found in the genera Inocybe and Inosperma.