Sp. Pl. 2: 621. 1753.
Herbs, annual, 1.5–10 dm; herbage bright yellow-green, glabrate or glandular-pubescent. Leaves: petiole length 1/3 blade; blade deltate to ovate, 5–10 cm, length 1.2–2 times width, base cordate to truncate, margins dentate. Inflorescences axillary, cymes. Pedicels slender, glabrate or stipitate-glandular. Flowers: corolla dark brown-red or purple-red, usually unicolored, 6–9 mm, throat narrow; staminode obovate to orbiculate, length greater than width. 2n = 36.
Phenology: Flowering Feb–May.
Habitat: Gardens, disturbed areas immediately adjacent.
Elevation: 400 m.
Introduced; Calif., Europe
Scrophularia peregrina was introduced in Rancho Santa Ana Botanic Garden for biosystematic studies in the 1950s. It is abundant and weedy in the Garden and immediately adjacent in uncultivated and non-irrigated areas; it is considered likely to spread, with potential negative impacts on the native flora, especially in southern California (T. S. Ross and S. Boyd 1996).
"greater than width" is not a number.