A phyllome lamina areole (PO:0025391) that is part of a leaf lamina (PO:0020039) and is completely surrounded by leaf lamina veins (PO:0020138) and cannot be divided into any smaller parts that are completely surrounded by leaf lamina veins. [source: ISBN:9780801475184]
Comment
Any order of leaf lamina vein can form the sides of a leaf lamina areole. Taken together, the leaf lamina areoles form a contiguous field of polygons over the area of a leaf lamina. Free ending veinlets (PO:0025390) may be found within a leaf lamina areole.