Sisymbrium altissimum L.
Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms)
Norta altissima (L.) Britt.
Pertinent Common Names (particularly those used in California; go to GRIN for other common names)
tall tumble mustard
Primary Disseminule Type
Description (diagnostics are in brown)
Fruit a many-seeded, dehiscent silique, linear-cylindric, straight, rigid, glabrous, (4)5–10(12) cm long x 1–2 mm wide, without conspicuous beak.
Seed oblong in outline with ± truncate ends, somewhat compressed, cross-section ovoid or bilobed, one face longitudinally convex, the other flat to sometimes transversely convex, 0.8–1.1 mm long x 0.5–0.6 mm wide x ca. 0.5 mm thick, with a distinct longitudinal groove on both faces delineating the radicle from the cotyledons (sometimes a second groove is seen on one of the faces). Surface glabrous, variable in texture, rough, with a greasy appearance, yellowish-brown to dull pale orange with a slightly darker hilar end, often with dark green or purplish lines or speckles.
Hilum in a notch, white funiculus often present.
Embryo bent, cotyledons incumbent to obliquely incumbent, endosperm lacking.
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)
AUQP, NZBORIC, NZBPI