ClipArt ETC
This illustration shows a section through the center of the thallus of Marchantia, showing one of the air chambers and chimney-like pores in the epidermis-ch, palisade-like chlorenchyma arising from bottom of air chamber. The lower cells of the thallus are nearly colorless and filled with watery solutions or mucilage. r, rhizoids; l, leaf-like plates of cells.

Marchantia

This illustration shows a section through the center of the thallus of Marchantia, showing one of the…