Bot. Gaz. 41: 316. 1906.
Plants 10–30 cm. Leaves: basal 2–12, blade elliptic to lanceolate, 30–260 x 40–60 mm, 2-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, serrate, surfaces glabrous; cauline 1–5, blade elliptic to lanceolate, 70–120 x 10–40 mm, 1-pinnatifid or 2-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, serrate, surfaces glabrous. Racemes simple, 1–3, exceeding basal leaves, each 6–20-flowered; bracts lanceolate, 5–15 x 3–5 mm, undivided, proximal margins entire, distal serrate, surfaces glabrous. Pedicels 2–3 mm. Flowers: calyx 10–14 mm, tomentose, lobes 5, triangular, 5–7 mm, apex entire, glabrous; corolla 18–22 mm, tube pinkish, rarely white, 8–13 mm; galea pink to lavender, rarely white, 10–11 mm, beakless, margins entire medially and distally, apex arching over abaxial lip; abaxial lip lavender, 4–7 mm. 2n = 16.
Phenology: Flowering Apr–Jun.
Habitat: Coastal chaparral or forests, riparian sites in coastal redwood forests.
Elevation: 10–300 m.
Shapes of flowers and leaves of Pedicularis dudleyi are similar to those of P. semibarbata; P. dudleyi has larger vegetative features. Floral features that set P. dudleyi apart include a 10–14 mm calyx and pink to purple corolla versus a 7–9 mm calyx and pale yellow corolla in P. semibarbata.
Pedicularis dudleyi occurs in the coastal mountains of central California in Monterey, San Luis Obispo, San Mateo, and Santa Cruz counties.