Agave macracantha

Agave macracantha (long-spined) is a species of Agave.

Background
Flower greenish, 2in. long, ten to twelve in a loose raceme 6in. long, all solitary on ascending pedicels 1/4in. to 1/2in. long; scape 2ft. to 3ft. long; bracts erect. leaves thirty to fifty in a stiff rosette 1ft. to 2ft. broad, oblanceolate, 6in. to 12in. long, 1in. to 1 1/2in. broad, very stiff and rigid, very  glaucous; face rather thicker in the lower half; terminal spine nearly black, very pungent, 1/2in. long; side prickles purplish-black, sub-distant, 1/8in. long, with a large point straight or slightly hooked. With a short stem, or stemless. Mexico, 1830. It has many varieties, among which are A. Bessereriana and A. flavescens.