Anubias 'Nangi' is known for its broad and long dark green leaves. It's great for beginners because it does within low nutrient and low light settings. 

Common Name: Anubias Nangi
Family Name: Araceae
Native To: Hybrid
Lighting: Low - Medium
pH: 6 - 8
Growth Demands: Easy
Growth Form: Spreading Rhizome
Growth Rate: Slow
True Aquatic: Yes
Placement in Tank: Midground
Available As: Bare Root and Potted