All plants have to to use some CO2.
Many plants can adapt to submersed growth, Ammannia gracilius is a classic example, in nature, it grows on dry land, away from water.
Bolbitus and likely this Genus Bunephalandra do in fact have different leaf morphologies with submersed vs emergent form.
Same for some Anubias leaves, with submersed leaves being thinner and less cutin wax.
Sort of blurs the line between aquatic and emergent aquatic plant.
Still, I've tried many plants that grow along streams, rarely do they grow well in aquariums.
It will be nice to try this genus out and see how the adapt to the Anubias locations I have in my tank.
I would suspect due to their smaller size and nice leaf color and textures, they will eventually become as popul;ar as Anubias perhaps, but that will be a few years off.
Going this direction:
Vasteq, would you be interested in sending some of these plants to Tropica so they can grow and sell them to the Hobbyist?
I am sure Troels would like to see if they do well in cultivation and Tropica will also give % (small, but hey, it is something!) of the sales profits if they bring it into production.
PM me and I'll give you his contact, it would be good for the Hobby and you might make some $.