Crinum calamistratum

Crinum calamistratum originates from the fast-flowing rivers of Central Africa (Cameroon and Nigeria) and is distinguished by its exceptionally narrow leaves — often less than 1 cm wide — that are tightly crinkled along their entire length. These long, spiralling, ribbon-like leaves can reach over a metre in large tanks and are visually unlike almost any other aquarium plant. It is remarkably tolerant of low light and hard water, thriving in conditions that would defeat most other large background plants.