What is "polysporangiophyte"

n. Any plant in which the sporophyte has a structure of branching stems (axes) terminating in sporangia.

Polysporangiophytes, also called polysporangiates or formally Polysporangiophyta, are plants in which the spore-bearing generation ( sporophyte) has branching stems (axes) that terminate in sporangia. The name literally means many sporangia plant. The clade includes all land plants ( embryophytes) except for the bryophytes (liverworts, mosses and hornworts) whose sporophytes are always unbranched. While the definition is independent of the presence of vascular tissue, all living polysporangiophytes also have vascular tissue, i.e., are vascular plants or tracheophytes. Fossil polysporangiophytes are known that have no vascular tissue, and so are not tracheophytes.