Emersed YES, you do realize that mean the ROOT has to be SUBMERGED and the stems and leaves are EMERSED. Anubias is one, Cardinal plant is another one, the lilly plant is emersed. Emersed and Total LACK of water are 2 different things.
If you look closely in those tubes, there isn't a total lack of water, they are quite humid, and the roots are buried in some sort of gel substance.