Southwestern or Mount Graham or Rothrock’s spurred gentian

Herbs annual, 1–5 dm. Stems usually 1, erect, simple or short-branched. Leaves: basal blades spatulate to elliptic-lanceolate; cauline blades linear, 1.5–4 cm × 2–5 mm. Inflorescences 4–27-flowered cymes or thyrses, ter­minal cluster often umbelloid, plus smaller inflorescences some­times present on branches. Flowers: calyx 5–14 mm, lobes lanceolate, apex acuminate; corolla yellow, 5–12 mm, lobes ovate, apex acute to acuminate, spurs proximally nearly horizontal, distally ± upcurved, (3–)5–8(–16) mm.

Flowering late summer–fall. Open coniferous woods, mountain meadows; 1900–3000 m; Ariz., N.Mex.; Mexico (Chihuahua, Coahuila, Durango, Sonora).

The name Halenia recurva (J. E. Smith) C. K. Allen has often been applied to this species, but its basionym, Swertia recurva J. E. Smith, is typified by a specimen of the South American species H. asclepiadea (Kunth) G. Don (J. S. Pringle 2008).