| When the edges of the areolas lift up from the substrate, it is called squamulose. |
| In crustose areolate lichens, the edges of the areolas peel up from the substrate and appear leafy. |
| The areolae on the valve are usually too small to be distinguishable with the light microscope. |
| On the valve surface the areolae are grouped together in fascicles bordered by distinct radial lines. |
| The apocrine sweat glands are confined to the axillae, areolae of the nipples, the anogenital area, and the external auditory meatus. |
