If you are interested in our unique Cape Floral Kingdom, this may be worth your while reading!

The definition of endemism in the biological sense is ” confined to a particular area “.
The Cape Flora Kingdom ( C.F.K. or fynbos as we know it ) has six species of endemic birds plus a host of endemic insects and  some amphibians etc. but it is the plant life , with nearly  6000 endemic species , (the British Isles has less than 20) out of a total of 9 000 that make it so unique .

It is not only at species level but 6 of its plant  families are endemic with a seventh narrowly endemic with only one of its 75 species found outside the fynbos Kingdom.
I do not think that Europe has one family which is endemic.

For many years Retzia capensis was the sole member of the family Retziaceae but recent taxonomic studies show it should be more correctly in the family Stilbaceae, so  temporarily reducing the number of endemic families to only 6 .

However, more studies showed that Lanaria lanata, previously in the family Haemadoraceae is so unique that it has now been placed in a newly raised family, the Lanariaceae, of which it is the sole member .  By contrast, the families Asteraceae and Orchidaceae have some 25 000 and 20 000 species respectively.  All of this is very technical and complex but it does keep us amateur botanists on our toes.
Both Retzia and Lanaria occur on the estate with the latter appearing in its thousands after a fire, covering the hillsides in an impressive splash of white.