Primulina is not the major collection in my Gesneriads garden because the snails in my garden love it a lot. I do not want to offer free salad for them !!! But I do have some Primulinas that sometimes light up my garden with their unusual beauty.
I had a trip to southern Thailand and visited several limestone parks in last December 2017. According to a common sense that we usually meet Gesneriads in limestone areas, I did expect to meet lovely Thai Gesneriads during my trip. The smallest plant I encountered was this tiny Microchirita in bloom. You can see how small it is with my finger as a comparison.