Hi Hendrik,
Somebody told me that Asarum were pollinated by slugs entering in flowers 
Do you know if it's true ? 
I have never heard that slugs are the pollinators; slugs are a real nuisance when you grow asarums;
that's the reason I grow them in pots, above ground level; if not all leaves and flowers will be eaten ....
I think that rather beetles and other crawling (soil) insects are responsible for the pollination.
Don't forget that this plants grows in woods and that their flowers are often burried by leaflitter.
Hendrik
