Anubias barteri var. nana 'Large'

Anubias barteri var. nana is a small, attractive plant from Cameroon that thrives in nearly any aquarium condition. Growing 5–10 cm tall with a 10–15 cm (or longer) rhizome, it grows slowly and has long-lasting leaves, giving slow-growing algae a natural chance to establish.
 
It performs best when attached to stones or driftwood using fishing line until secured. If planted in the substrate, never cover the rhizome, as it may rot. This hardy plant flowers underwater and is safe from herbivorous fish, making it ideal for low-light and low-maintenance setups.