Agave rigida

from The Collaborative International Dictionary of English v.0.48

Ixtle \Ix"tle\, Ixtli \Ix"tli\([i^]x"tl[-e]), n.
   1. (Bot.) A Mexican name for a variety of {Agave rigida},
      which furnishes a strong coarse fiber; also, the fiber
      itself, which is called also {pita}, and {Tampico fiber}.
      [Written also {istle}.]
      [1913 Webster] Ixtle

from The Collaborative International Dictionary of English v.0.48

Jeniquen \Je*ni"quen\, n. [Sp. jeniquen.] (Bot.)
   A Mexican name for the Sisal hemp ({Agave rigida}, var.
   Sisalana); also, its fiber. [Written also {hen[imac]equen}.]
   [1913 Webster]