Reconstruction of Aglaophyton, illustrating bifurcating axes with terminal sporangia, and rhizoids.
Modern polysporangiophyte, monarch fern is a vascular plant.
Scientific classification
Kingdom:
Plantae
Clade:
Embryophytes
Clade:
Polysporangiophytes Kenrick & Crane (1997)
Subgroups
non-vascular fossil Polysporangiophytes
†Horneophytopsida
†Aglaophyton
unclassified fossil Polysporangiophytes
†Salopella
†Tarrantia
Vascular plants (tracheophytes)
†Cooksonia
†Uskiella
†Rhyniophytes
Lycophytes
Lycopsida-clubmosses
†Zosterophylls
Euphyllophytes
†Eophyllophyton
†Psilophyton – trimerophytes
Moniliformopses
†Cladoxylopsida
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 plants in which the spore-bearing generation (sporophyte) has branching stems (axes) that bear 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 normally unbranched, even if a few exceptional cases occur.[1] 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. Extinct polysporangiophytes are known that have no vascular tissue and so are not tracheophytes.
^Harrison, C. Jill; Morris, Jennifer L. (2017). "The origin and early evolution of vascular plant shoots and leaves". Philosophical Transactions of the Royal Society B: Biological Sciences. 373 (1739): 20160496. doi:10.1098/rstb.2016.0496. PMC 5745332. PMID 29254961.
and 29 Related for: Polysporangiophyte information
Polysporangiophytes, also called polysporangiates or formally Polysporangiophyta, are plants in which the spore-bearing generation (sporophyte) has branching...
(around 430 to 390 million years ago). They are the simplest known polysporangiophytes, i.e. plants with sporophytes bearing many spore-forming organs (sporangia)...
bilaterally symmetrical sporangia. Evolutionary history of plants Polysporangiophyte Two spellings are in use: the spelling used by the original author...
strand with a central protoxylem.": 8 With this definition, they are polysporangiophytes, since their sporophytes consisted of branched stems bearing sporangia...
on long, unbranched stems, thereby distinguishing them from the polysporangiophytes, which include all vascular plants. The spore-producing sporophytes...
from spore-producing bryophytes in that, like seed plants, they are polysporangiophytes, their sporophytes branching and producing many sporangia. Also unlike...
Zygnematophyceae. Embryophytes consist of the bryophytes and the polysporangiophytes. Living embryophytes include hornworts, liverworts, mosses, lycophytes...
spore-forming organ (sporangium), whereas in all other land plants, the polysporangiophytes, the sporophyte is branched and carries many sporangia. The contrast...
various ranks. In 2004, Crane et al. published a cladogram for the polysporangiophytes, in which Rhynia and the other Rhyniaceae are placed as basal vascular...
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