One is this plant family the oldest of the earth. You already covered one major part steeply still lived the earth as the dinosaurs. There is approx. 12,000 Speciesen from few cm of little mites up to 15 m of high copies would be different. Ferns propagate vegetatively or by training spurs. One usually finds these under the fly whisk of the plant. Epiphytisc must and the introduced variants are held to atmospheric humidity and temperature at high.