Kaibab agave

Agave kaibabensis McKelvey, J. Arnold Arbor. 30: 227, plate 1. 1949; A. utahensis var. kaibabensis (McKelvey) Breitung

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.