The vascular bundles that contain xylem (water conducting) and phloem (food conducting) tissues.
Veins in daylily leaves are parallel. This is a trait that is common to many monocots.
Veins in a back-lighted daylily leaf. Photo: Sue Bergeron used with permission
Daylily leaves showing parallel veins. Photo: Hebron Smith, Ph.D., used with permission
Cross section of a daylily petal with the veins labeled. Photo by Charmaine Rich, used with permission
Photo by Sue Bergeron, used with permission. Cultivar: ‘Pumpkin Kid’