Utah Agave

Plants acaulescent, suckering or not; rosettes solitary or sparingly cespitose, 1.5–6 × 1.5–10 dm. Leaves ascending, 12–50 × 1–5.5 cm; blade grayish green to yellowish green or green, without bud-prints, linear-lanceolate or lanceolate, stiff, adaxially plane or concave toward apex, abaxially convex toward base; margins straight or undulate, nonfiliferous, conspicuously armed, horny from distalmost teeth to apical spine, teeth single, 2–12(–15) mm, 1–4 cm apart, rarely absent; apical spine light gray to ivory white, acicular or subulate, 2–20 cm. Scape 1.7–5 m. Inflorescences spicate, racemose or narrowly paniculate, open to densely flowered; bracts caducous, narrowly triangular, 4–8 cm; lateral branches 50+, horizontal to slightly ascending, comprising distal 1/2–2/3 of inflorescence, shorter than 10 cm. Flowers 2–12 per cluster, erect, urceolate, 2.3–4.3 cm; perianth yellow, tube campanulate, 1–4 × 6.5–11.5 mm, limb lobes connivent, erect, subequal, 7–12 mm; stamens slightly exserted; filaments inserted at or 1–3 mm above base of perianth tube, erect, white, 1.3–2.4 cm; anthers pale yellow, 5–12 mm; ovary 1.2–2.9 cm, neck constricted, 3.5–8.5(–10) mm. Capsules pedicellate, oblong to ovoid, 1–2.5 cm, apex beaked. Seeds 2–4 mm.

Agave utahensis is a species of agave known by the common name Utah agave.

Varieties of the species include the Nevada agave and Kaibab agave.

It is an uncommon plant of the United States' desert southwest, in the states of Utah, Nevada, Arizona, and California. Although plants in some areas are threatened, overall the species is stable and is considered to be of Least Concern by the IUCN.