Rorippa curvisiliqua (Hook.) Bessey

    ex Britton
Family: Brassicaceae

Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms)

Sisymbrium curvisiliqua Hook.

Pertinent Common Names (particularly those used in California; go to GRIN for other common names)

curve-pod yellowcress

Primary Disseminule Type


Description (diagnostics are in brown)

Fruit a multi-seeded dehiscent silique, linear-cylindric to narrowly oblong, only slightly compressed, curved or sometimes straight, glabrous, 0.4–1.5(1.8) cm long x 1–1.5(2) mm wide, without conspicuous beak. Style remnant 0.1–0.8 mm long.

Seed ± round to cordate in outline, partially compressed, cross-section oblong or ovate to bilobal, 0.5–0.8 mm long x 0.4–0.6(0.7) mm wide x 0.2–0.4 mm thick. Surface light yellowish-brown but darker brown in hilar region, sparkly to shiny (under magnification), minutely papillate-bubbly (colliculate), irregularly indented between the radicle and cotyledons.

Hilum in a prominent notch bordered on one side by a short radicular tip, funicular remnant lighter brown.

Embryo bent, cotyledons accumbent, endosperm lacking.

Similar Species

Rorippa palustris

Risk Assessment (codes in yellow or red indicate cause for concern; assessments are current as of mid-2011; click AUQP, NZBORIC, or NZBPI for access to the most recent versions of these databases and possible assessment changes)