(A) Scanning electron micrograph of bacteria on the surface of a corn (Z. mays) leaf. (A) Scanning electron micrograph of bacteria on the surface of a corn (Z. mays) leaf. Photograph taken by J. Lindemann and M. Garment; reprinted from reference312 with permission. (B) Imprint of a corn leaf. Segments of a field-grown corn leaf were gently pressed onto the surface of King's medium B (146), a nonselective medium. Susan S. Hirano, and Christen D. Upper Microbiol. Mol. Biol. Rev. 2000; doi:10.1128/MMBR.64.3.624-653.2000