I’m pretty sure “imaginatus” would be fine for “imagined”.
There are lots of genera of fern—indeed, multiple classes—so clearly (1) you can’t just steal an existing genus name and (2) any Latin word broad enough to mean “fern” isn’t going to be suitable as a genus name, if that’s the intention.
Perhaps “pteridus”, which is post-classical but is the origin of the combining form pterido- as in “pteridophytes”, the category of plants that includes ferns and various fern-like things. I think its original meaning might be “bracken”.
(Note: I am not actually either a classicist or a botanist; treat the above with caution.)
I’m pretty sure “imaginatus” would be fine for “imagined”.
There are lots of genera of fern—indeed, multiple classes—so clearly (1) you can’t just steal an existing genus name and (2) any Latin word broad enough to mean “fern” isn’t going to be suitable as a genus name, if that’s the intention.
Perhaps “pteridus”, which is post-classical but is the origin of the combining form pterido- as in “pteridophytes”, the category of plants that includes ferns and various fern-like things. I think its original meaning might be “bracken”.
(Note: I am not actually either a classicist or a botanist; treat the above with caution.)