leaf midvein FNA:e05450e0-b820-465a-ba99-ced17c5a34b0 vascular leaf costa (related) mid rib (broad) vena media (Spanish, exact) plant_anatomy PO_GIT:435 midrib (broad) vascular leaf midvein (exact) mid-rib (broad) 葉主脈、中央脈、中脈 (Japanese, exact) FNA:d0ce6c67-625d-4187-bd50-3af01e6e68a6 PO:0020139 A primary leaf vein (PO:0025413) that is the central vein of a vascular leaf (PO:0009025). vascular leaf costae (related, plural) Often the most prominent vein of a vascular leaf. See costa (PO:0030072) for the central conductive strand of a non-vascular leaf (PO:0025075). primary leaf vein