Cordylanthus rigidus subsp. littoralis
Syst. Bot. Monogr. 10: 42. 1986.
Stems downy to puberulent, hairs soft. Spikes 5–8-flowered; proximal bracts 15–20 mm, equal to or longer than flowers, midlobes green or red distally, lanceolate, 1.5–2.5 mm wide, apex acute to retuse. Flowers: corolla 15–20 mm.
Phenology: Flowering Jul–Sep.
Elevation: 0–200 m.
Subspecies littoralis grows only in the coastal dunes of the central coast in Monterey and Santa Barbara counties. It intergrades with subsp. rigidus. It is not known if this subspecies is genetically distinct or if its distinguishing features are caused by the unusual habitat where the plants grow.