Pl. Hartw., 22. 1839.
Plants 35–55 cm. Leaves: basal 0; cauline 10–20, blade linear to narrowly lanceolate, 15–70 x 1–6 mm, undivided, margins serrate, surfaces glabrous. Racemes paniculate or simple or buds present in cauline leaf-axils, 3–15, each 2–12-flowered; bracts linear to narrowly lanceolate, 2–70 x 1–6 mm, undivided, proximal margins entire, distal serrate, surfaces glabrous. Pedicels 1.5–4.5 mm. Flowers: calyx 5.5–8.5 mm, glabrous, lobes 2, triangular, 0.5–1 mm, apex entire, glabrous; corolla 12–20 mm, tube yellow, 4–10 mm; galea yellow, 8–11 mm, beakless, margins entire medially, 1-toothed distally, apex arching over abaxial lip; abaxial lip yellow, 6–8 mm.
Phenology: Flowering Jul–Aug.
Habitat: Moist forested ridges and slopes.
Elevation: 2000–3000 m.
N.Mex., Mexico (Chihuahua), Mexico (Durango), Mexico (Michoacán)
Plants of Pedicularis angustifolia have two-lobed calyces, undivided linear leaves, and branched or unbranched inflorescences. The beakless galea has a single tooth on each abaxial margin at the distal tip of the galea apex.