Cross section of a grape bud with the primordia (embryonic tissue) from which flower and leaf clusters develop at the top center of the photo. Grape bud beetle, <i>Glyptoscelis squamulata</i>, feeds on the primordia.
Cross section of a grape bud with the primordia (embryonic tissue) from which flower and leaf clusters develop at the top center of the photo. Grape bud beetle, Glyptoscelis squamulata, feeds on the primordia.
Credit: Vernon M. Stern