Agave potatorum

Agave potatorum (drinkers) is a species of Agave.

Background
Flower greenish yellow, 3in. long; scape 12ft. high, including the thyrsoid panicle, which is 4ft. to 5ft. long. leaves about twenty in a dense sessile rosette, 4ft. to 5ft. broad, oblong-spathulate, 2ft to 2 1/2ft. long, 7in. to 9in. broad above the  middle, a dull glaucous green; face slightly concave; terminal spines hard, pungent, 1 1/2in. to 2in. long; side prickles deltoid- cuspidate, about 1/4in. long, with the edge slightly wavy between them. Mexico, 1830.