They don't even need to be semi aquatic actually. I've only ever had luck growing anubias in terriums or paldariums. Usually just planted in black dirt and kept most/humid. I usually cover the tops of the tanks with plastic wrap. I also have rotella(sp) growing the same way and I had pennywort in the past but it grew to out of control.
At the last aquarium auction I was at there were emersed swords. They looked funky. They didn't have big broad leaves, instead small oval ones on really long stems. They seemed to be completely acclimated to terrestrial.
Lots of other will grow. H. polysperma, H. corybosa should not have a problem. When grown emersed they do grow differently. Usually smaller leaves that have a waxy coating. Stem plants grow kinda spidery, they don't have alot of stem support. It takes a while for a plant to go from submersed to emersed growth. Its best to put them really wet soil and keep the air really humid. Once they start growing you can reduce the water/humidity levels. I've shocked a few by not taking care of them. One of my emersed tanks got really dry. A couple anubias petite plants shriveled up. I flooded it and they came back to life. They lost all there original leaves but started growing new ones.
I just bought some today; they look really nice. ^^; They have waxy leaves, so they don't get wet. x3 They're really nice plants. ^^;
