PLANT: Rosettes (20-)30-60 cm high, 40-100 cm broad, single or sparingly caespitose.

LEAVES: numerous, (25-)27-50 cm long, 3-5.5 cm wide, lanceolate, usually straight or upcurved, dark green to bluish gray glaucous; teeth 2-4 cm apart, the terminal spine 2-4 cm long.

INFLORESCENCE: with scape 3.5-5 m tall, 4.5-7 cm in diameter, narrowly paniculate, moderately to very dense, with several to numerous lateral branchlets, the longer ones 7-10 cm long, the flowering stalk thickish.

FLOWERS: in clusters of 4-12, (26-)29-43 mm long; ovary 16-29 mm long. 2n = 60.

NOTES: Open rocky, usually limestone slopes of Mohave and Great Basin desert scrub and Great Basin conifer woodland: Coconino, Mohave cos.; 700-2400 m (2300-7800 ft); May-Jul.

REFERENCES: Hodgson, Wendy. 1999. Agavaceae. Ariz. - Nev. Acad. Sci. 32(1).

Rosettes (2-)3-6 × 4-10 dm. Leaves (25-)27-50 × 3-5.5 cm; blade lanceolate; marginal teeth (2-)3-5 mm, 2-4 cm apart; apical spine stout, subulate, 2-4 cm. Scape 3.5-5 m. Inflorescences narrowly paniculate; longer lateral branches (1-)4-10 cm. Flowers 4-12 per cluster, (2.6-)2.9-4.3 cm; ovary 1.5-2.9 cm. 2n = 60.

Flowering mid spring--early summer. Calcareous or sandstone outcrops in desert scrub, pinyon-juniper, or adjacent conifer woodlands; 700--2500 m; Ariz.