Light micrograph of the male section of a thallus with antheridia of a liverwort (pellia). This image is a vertical section of the thallus, seen through a gemma cup containing gemma. The thallose or leafy plant is the gametophyte; it bears sex organs (male antheridia, female archegonia) on the underside or on special erect branches. Seta and capsule constitute the sporophyte which grows attached to the gametophyte. Magnification x100 @ 6x7cm.