Descurainia sophia (L.) Webb ex Prantl
Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms)
Sisymbrium sophia L.
Pertinent Common Names (particularly those used in California; go to GRIN for other common names)
flixweed, tansy mustard
Primary Disseminule Type
Description (diagnostics are in brown)
Fruit a multi-seed, dehiscent silique, linear-cylindric, torulose, (1)1.5–2.7(3.5) cm long x 0.5–1(1.2) mm wide.
Seed oblong in outline, partially compressed, cross-section bilobed or ovoid to triangular, one face longitudinally convex, the other face flat to transversely convex, 0.7–1.3 mm long x 0.4–0.7 mm wide x 0.3–0.5 mm thick, with a groove on each face tracing an ellipse near the hilar end of the seed outlining the bent positions of the radicle and cotyledons. Surface glabrous, reticulated in a distinct regular ladder-mesh pattern in parallel rows, shiny or oily-looking, golden to bright orangish-brown with a reddish circular marking over the cotyledons at the hilar end of the seed.
Hilum in a notch, white funiculus often present.
Embryo bent, cotyledons 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