#lichen thallus

• Areolate — Provided with areoles, or exhibiting surfaces divided into small distinct portions or polygons isolated by structural lines, cracks, or furrows. In botany and mycology, it describes leaves, stems, or mushroom caps whose cuticles are geometrically fragmented due to dryness. In lichenology, it defines a lichen thallus cracked into small blocks resembling mosaic tiles.