We most probably have a book on fern varieties. I stumble on new ferns virtually everyday! We live on the Drakensberg escarpment on the "coastal side" and 1300 mtrs above sea level. Our climate is virtually moderate to cool to cold, even in summer. I work in the garden with a fleeced jacket at times and have to take it of around 11:00 in the mornings, other days we may climb to about 30 Celcius. In winter our temps drop to about -2 to -4, at the most--still very or too cold for me.
Although I have Msc Bot, my area of expertise was mostly in conifers and as such limited to certain varieties. My thesis was done in the Kruger National Park and in particular on the environmental impact of Elephant and Buffalo.
Now as for the other varieties of ferns, apart from the "junk" or the invader ferns, which we eradicate using Round-up, I collect daily new specimens. Obviously, in our country to transport indigenous plants is stricktly prohibited. So we do our "environmental shopping", hide the plants and fetch them with the car, for a quick in and out.
I think for someone to identify all the varieties, I would need to compile a dok, with pics and rather send by e-mail. If you are agreeable, my e-mail is: email@example.com
. We can then correspond frequently.