Agave univittata

Agave univittata (one-striped) is a species of Agave.

Background
Flower green, 1 1/2in. long (or less); spike 10ft. to 12ft. long, 6in. to 7in. thick; pedicels 1/4in. long; scape 4ft. long, exclusive of the spike, its bracts dense and squarrose. leaves fifty to eighty in a stemless rosette, rigid, ensiform, 2ft. to 2 1/2ft. long, 2in. to 3in. broad at the middle, narrowed slightly downwards, and very gradually upwards, dull green, with a broad pale  band down the face, faintly lineate on the back; margin bordered  by a narrow, continuous grey horny line, furnished with hooked lanceolate prickles, 1/8in. long, from 1/2in. to 1in. apart; terminal spine brown, pungent, 1in. long. Mexico, 1830.