interveinal

Interveinal is an adjective used in botany and plant sciences to describe the region of a leaf or other tissue that lies between two adjacent veins. It refers to the lamina areas between the venation network and is often contrasted with tissue near veins. The term helps describe patterns of coloration, texture, or damage that follow the leaf’s vein structure.

Interveinal chlorosis is a common condition described with this term. It refers to yellowing of the leaf tissue between veins while the veins themselves remain green. This pattern is typical of certain micronutrient deficiencies, especially iron, but can also occur with deficiencies in manganese or zinc, as well as in some cases of water stress or root problems. In iron deficiency, younger leaves are usually affected first, with progression from the base toward the tip.

Beyond chlorosis, interveinal changes can include necrosis or flecking if stress or toxicity is severe. The appearance and distribution of interveinal symptoms help guide diagnostic assessments in horticulture and crop management. In leaf anatomy, interveinal regions are influenced by vein density and venation type, and can differ in pigment, thickness, or texture relative to areas near veins.

In summary, interveinal describes the zones between leaf veins, a key consideration when diagnosing nutrient status, disease symptoms, or structural characteristics in plant leaves.