Cardamine mexicana O. E. Schulz, Bot. Jahrb. Syst. 32: 461. 1903. TYPE:

            Herbs, annual, hirsute nearly throughout. Stems 1–2 dm, branched about base. Leaves pinnately compound, 5-foliolate; petioles slender, not auriculate at base; leaflets broadly ovate to suborbicular or obovate, irregularly crenulate, petiolulate, terminal leaflet largest, 1–2 cm in diam. Raceme ebracteate, 6–10-flowered, elongated in fruit; fruiting pedicels erect to strongly ascending, 5–10 mm, slender. Sepals oblong, ca. 2 mm, hirsute; petals white, 3–4 mm; filaments – mm; ovules – per ovary. Fruit linear, 2–3 cm × 1–1.3 mm, glabrous, erect to ascending; style thick, < 1 mm. Seeds oblong, wingless.

Flowering Mar–Nov.

Habitat: shady limestone ledges, moist crevices, canyon walls, slopes.

Distribution: Mexico (Coahuila, Nuevo León, San Luis Potosí).