What is Polysporangiophyte?
{{Automatic taxobox | taxon = Polysporangiophytes/Plantae | authority = Kenrick & Crane (1997) | fossil_range = {{geological range|Wenlock|Recent|[[Llandovery epoch|Llandovery]] or [[Wenlock epoch|Wenlock]] to Recent|earliest=Llandovery|}} | image = Aglaophyton reconstruction.jpg | image_caption = Reconstruction of ''Aglaophyton'', illustrating bifurcating axes with terminal sporangia, and rhizoids. | subdivision_ranks = Subgroups | subdivision = * '''[[Incertae sedis|non-vascular fossil Polysporangiophytes]]''' ** †[[Horneophytopsida]] ** †''[[Aglaophyton]]'' * '''[[Incertae sedis|unclassified fossil Polysporangiophytes]]''' ** †''[[Salopella]]'' ** †''[[Tarrantia]]'' * '''[[Vascular plant]]s (tracheophytes)''' ** †''[[Cooksonia]]'' ** †''[[Uskiella]]'' ** †[[Rhyniophyte]]s ** [[Lycophyte]]s *** [[Lycopodiopsida|Lycopsida]]-clubmosses *** †[[Zosterophyll]]s ** [[Euphyllophyte]]s *** †''[[Eophyllophyton]]'' *** †''[[Trimerophytophyta|Psilophyton]]'' – trimerophytes *** [[Moniliformopses]] **** †[[Cladoxylopsid]]a **** [[fern|Filicopsida]]-ferns **** [[Equisetopsida]]-horsetails *** [[Radiatopses]] **** †''[[Pertica]]'' **** [[Lignophyta]] ***** '''[[Spermatophyta]] (seed plants)''' ****** [[Cycadophyta]] – cycads ****** [[Pinophyta]] – conifers ****** [[Gnetophyta]] – gnetales ****** [[Ginkgophyta]] – ginkgo ****** †[[Pentoxylales]] ******†[[Bennettitales]] – cycadeoids ****** [[Flowering plant]] – flowering plants }} '''Polysporangiophytes''', also called '''polysporangiates''' or formally '''Polysporangiophyta''', are a type of [[plant]]. The [[sporophyte]] of these plants have branching stems (axes).These stems have [[sporangium|sporangia]]. The name means ''many sporangia plant''. The [[clade]] includes all land plants ([[embryophyte]]s) except for the [[bryophyte]]s (liverworts, mosses and hornworts). The sporophytes f those plants are normally unbranched.<ref name=Harrison>{{cite journal |first1=C. Jill |last1=Harrison |first2=Jennifer L. |last2=Morris |title=The origin and early evolution of vascular pla