Sorry, I erred on the side of brevity. It's a rapidly propagating, well-adapted to in vitro culture fern whose genome, I think, has been sequenced and mutants (many of them viable) described in detail. Compared to irregularly reproducing, of-unknown-variety-within-a-variable-species, growing-in-the-wild plants with who knows how many offspring missed in survey, it's a goldmine. I only have to persuade my Dept. Head of this.