A shoot system (PO:0009006) that consists of the shoot axes (PO:0025029) and non-vascular leaves (PO:0025075) of a plant in the gametophyte development stage (PO:0028003) . [source: ISBN:0962073342, POC:curators]
A gametophore is the leafy part of the gametophyte of mosses and leafy liverworts, excluding the protonema. Develop from buds that form on the protonema. Antheridia and archegonia arise on the gametophore.