Liverwort shoot. Fluorescence light micrograph of a shoot of the leafy liverwort Cephalozia bicuspidata. This gametophyte stage is the dominant part of the life cycle of a liverwort, in contrast to the spore-producing stage. Hornworts, liverworts and mosses are non-vascular plants collectively known as bryophytes. This sample has been imaged using autofluorescence under ultraviolet (UV) light. Magnification: x360 when printed at 10 centimetres across.