COVER A stem of the grass Andropogon gerardii (also known as “big bluestem”) emerging from a leaf sheath. Grasses, like other monocots, have tall, cylindrical leaves that visually differ from the wide, flat leaves of eudicot plants. By means of computational modeling and developmental genetic analysis, researchers have uncovered similarities in the leaf development mechanisms of grasses and eudicot plants. See page . 1377.
Photo: Bruce Leander/Lady Bird Johnson Wildflower Center