5. Dryopetalon palmeri (S. Watson) O. E. Schulz, Notizbl. Bot. Gart. Berlin-Dahlem 10: 561. 1929; Cardamine palmeri S. Watson, Proc. Amer. Acad. Arts 24: 38. 1889; Sibara palmeri (S. Watson) Greene, Pittonia 3: 12. 1896. TYPE: Mexico, Lower California, Muleje, Gulf of California, near Saltwater, foothills, 25 Dec 1887, E. Palmer 421 (holotype, GH!).

Dryopetalon purpureum Rollins, Contr. Dudley Herb. 3: 204. 1941. TYPE: Mexico, Lower California, Magdalena Island, Mar 1917, C. R. Orcutt 17 (holotype, GH!).

     Herbs, annual, glabrous or sparsely pilose, somewhat glaucous. Stems 2–5 dm, erect, simple, branched above. Basal and lowermost cauline leaves petiolate, glabrous or sparsely pubescent on petioles; blade ovate to lanceolate in outline, pinnately lobed or partite to sinuate-dentate, 1.5–6.5 × 1–3 cm; cauline leaves petiolate; upper cauline leaves similar, not auriculate at base. Racemes lax, elongated in fruit; fruiting pedicels divaricate-ascending, 8–2 mm, slender, glabrous or sparsely pilose. Sepals oblong, 3–4.5; petals purple or lavender, broadly spatulate to obovate, 6–8 × 2–3.5 mm, dentate to laciniate and 3–7-lobed; claw 3–4 mm, glabrous; filaments glabrous; athers oblong. Fruit linear, 1.5–5 cm × 1–2 mm, straight; valves glabrous; gynophore 0.6–1 mm; style cylindric, 1–2 mm; stigma entire. Seeds oblong, ca. 1.5 mm, wingless; cotyledons incumbent or obliquely so.

Flowering: Nov–Apr.

Habitat: bluffs, canyons, hillsides, shady ravines, ridges, shaded cliffs.

Distribution. Mexico (Baja California Sur, W Sonora).