Furcraea macdougallii, known as MacDougall's Century Plant, is a large rosette forming succulent that has 6 foot long dark-green stiffly-upright leaves with regularly-spaced hooked teeth growing at the top of an unbranched trunk that can be 8 feet tall or more. In habitat, it can get up over 20 feet and is considered the tallest of the Agave relatives. When the plant blooms it produces a spike that can rise an additional 20 feet, blooming greenish-white flowers.