Light micrograph of a leafy liverwort (Lophocolea heterophylla) gametophore consisting of a small shoot and three rows of leaves. The two dorsal rows of leaves are divided into two lobes. The ventral row of leaves are less conspicuous and a different shape. Liverwort leaves have no midrib and are built of one layer of undifferentiated cells with many chloroplasts and storage organelles (oil bodies) inside. Magnification: x166 when printed at 10 x 10 cm.