Feddes Repert. Spec. Nov. Regni Veg. 52: 33. 1943.
Stems 15–35 (–70) cm. Leaves: petiole 4–15 mm; blade ovate to broadly ovate, 30–40 × 20–25 mm, smaller distally. Pedicels 1–3 mm, longer in fruit, glandular-hairy. Flowers: calyx lobes equal, 4–5 mm in flower, 6.5–9 mm in fruit, glandular-hairy; corolla 8–10 mm, abaxial lip cream, often with darker veins, palate white with yellow spots, furrowed, adaxial lip cream with deep purple veins; staminode 0–1 mm. Capsules pendent, globular, 5–8 mm, sparsely glandular-hairy. Seeds 1.5–2.5 mm, ridged and tuberculate dorsally, winged adaxially. 2n = 26.
Phenology: Flowering Jan–Apr.
Habitat: Rocky slopes, washes.
Elevation: 0–800 m.
Ariz., Calif., Mexico (Baja California), Mexico (Sonora)
Plants of Pseudorontium cyathiferum will flower and set fruit at any time of the year if moisture is available. Sand grains often stick to the viscid hairs, covering the plants.