Cooksonia
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Cooksonia is an extinct group of primitive land plants, treated as a genus, although probably not monophyletic. The earliest Cooksonia date from the middle of the Silurian; the group continued to be a
Cooksonia NMNH
Reconstruction as an independent plant
Vascular plant
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Vascular plants, also called tracheophytes or collectively Tracheophyta, are plants that have lignified tissues for conducting water and minerals throughout the plant. They also have a specialized non
Cooksonia
…includes the oldest known plant to have a stem with vascular tissue and is thus a transitional form between the primitive non-vascular bryophytes and the vascular plants. Only the sporophyte phase of Cooksonia is currently known (i.e. the phase which produces spores rather than gametes). Individuals were small, a few…
Selaginella uncinata Spring
Nymphaea alba flower and leaves DSC 3326w
Xylem elements in the shoot of a fig tree (Ficus alba), crushed in hydrochloric acid