In article , Pam Moore
writes

One of Bob's unusual pronunciations is lonickera!

It has its logic. After all, we don't talk about seratonia or
serastrum.

It seems the rule in English, Spanish etc that c is (generally) k before
a,o,u and s before e,i is a post-latin thing.
--
Kay
"Do not insult the crocodile until you have crossed the river"