Agave Americana Flower
Agave americana has yellowish green flowers that are between two and three inches long. The leaves can be as long as six feet and are concave shaped. The leaves have dark brown prickles.
GalleriesFlowers and Shrubs: A
Nicholson, George The Illustrated Dictionary of Gardening, Div. VI (London, England: L. Upcott Gill, 1884)