1) Fern genus 2) Genus horneophyton 
The sporophyte had bare stems (axes) up to 20 cm high and about 2 mm in diameter with an undivided cortex; stomata were present but rare. There was a thin central strand of conducting tissue, but this was not reinforced with spiral and reticulate thickenings (and thus does not constitute true vascular tissue). Early stages of development of the sp...
(from the article `Rhynie plants`) Three genera are represented by almost perfectly preserved fossils of virtually entire plants: Rhynia and Horneophyton, of the family Rhyniaceae; and ...
[n] - Devonian fossil plant considered one of the earliest forms of vascular land plants