=A. micracantha= (small-spined). _fl._ yellowish, 1-1/2in. long, in a dense spike 3ft. to 4ft. long, 6in. to 7in. broad when expanded. _l._ twenty to thirty in a shortly stalked rosette, oblanceolate oblong, 15in. to 18in. long, 3in. to 5in. broad above the middle, narrowed to 2in. to 3in. above the base, bright green; face flattish above the centre; terminal spine red brown, moderately firm; the copious close reddish-brown horny teeth about 1/12in. long, the upper ones ascending, the lower deflexed. Mexico, 1860.
=A. miradorensis= (Mirador).* _fl._ unknown. _l._ about thirty in a sessile rosette, oblanceolate-spathulate, 1-1/2ft. to 2ft. long, 2in. to 2-1/2in. broad above the middle, thin but firm in texture, very glaucous, with a firm red-brown terminal spine 1in. long; side prickles very minute, crowded, colourless, five or six to an inch in the centre of the leaf. Mexico, 1869. SYN. (probably) _A. Desmetiana_.
=A. Noackii= (Noack's). A synonym of _A. Sartorii_.
=A. ornata= (adorned). A synonym of _A. americana picta_.
=A. Ortgiesiana= (Ortgies'). A dwarf form of _A. schidigera_ with a pale central band to the leaf. Mexico, 1861. A widely-distributed and desirable species.
=A. pendula= (pendulous). Synonymous with _A. Sartorii_.
=A. polyacantha= (many-spined).* _fl._ greenish-yellow, 1-1/2in. to 2in. long; flowering-stem 8ft. to 12ft. high, including the dense spike, which is 3ft. to 4ft. long. _l._ about thirty in a sessile rosette, oblanceolate-spathulate, rigid, 1ft. to 2ft. long, 2-1/2in. to 5in. broad above the middle, bright green, slightly glaucous when young; terminal spine dark brown, pungent, 1/2in. to 3/4in. long; side prickles crowded, deltoid, dark chestnut brown, irregular, 1/12in. or 1/8in. long, all sub-patent. Mexico, 1800. SYNS. _A. uncinata_, _A. xalapensis_.
=A. Poselgerii= (Poselger's). _fl._ purplish, rather more than 1in. long; scape, including the spike, 6ft. to 10ft. _l._ twenty to thirty in a dense rosette, rigid, ensiform, 1ft. to 1-1/2ft. long; 1-1/2in. to 2in. broad at the middle, dull green, with a broad pale band down to the face, rounded and marked with numerous distinct green lines down the back; margin furnished with a continuous straight, moderately broad edge; terminal spine 1in. long, brown, pungent; side prickles moderately close, lanceolate, hooked, 1/6in. long. Trunk, 4in. to 6in. long. Texas.