This image is oriented upside-down. It shows an early stage of the embryo inside the venter of the old archegonium, the neck of the archegonium and the neck canal. The second example of thalloid liverwort is Marchantia . All the rest of the images below are of this genus. Small pieces of gametophyte tissue called gemmae are located inside these splash cups.
Rain drops splash gemmae out of the gemma cup.
Each gemma can form a new gametophyte thallus by mitosis. This is asexual reproduction. Air pores are located on the dorsal surface. Female plants form archegoniophores and male plants form antheriophores. Each is connected to the top of the antheridiophore by a canal.