By Robert H Olley | May 7th 2011 11:34 AM
As a teenager, in the early 1960s, I developed an interest in botany, and in particular ferns and the so-called “fern-allies”. So, living in the drier South-East of England, I welcomed trips to places where these plants about, such as Wales, mountainous Scotland, and Cornwall. But today I am travelling through time, showing how our knowledge of this branch of the Plant Kingdom has expanded over the last 200 years or so. (continued)
I used to think that clubmosses, ferns and horsetails were more or less equivalent branches of land plants, and that the vascular plants had developed from the ferns. But modern phylogeny shows a much richer picture.