The best choice in a low light plants.

Anubias barteri var. nana (dwarf anubias)
ceratophyllum (hornwort)
cryptocoryne affinis
cryptocoryne lutea
cryptoryne walkeri
egeria densa (eledea)
microsorium pteropus (java fen)
hydrophila corymbosa

salvinia auriculata (salvinia)

from encyclopedia of aquarium plants - Peter Hiscock.