Horneophyton
Horneophyton is a genus of early Devonian fossil land plants. Its fossils are very common in the Rhynie chert. Both the sporophyte and a female gametophyte have been found as fossils. The sporophyte was about 20 cm tall, and the gametophyte was about 6 cm tall. It is not really a vascular plant. It had vascular tissue but the cells had thin walls.