Sinapis arvensis ssp. arvensis
- Sinapis arvensis ssp. arvensis is an annual herb with leafy, erect, branched stems.
- Basal leaves are obovate, oblong, or lanceolate, and 1.6-7.1 in. (4-18 cm) long with lyrate or pinnatifid margins. Cauline leaves are petiolate with undivided margins, coarsely toothed.
- Sepals are yellow to green and 0.2-0.24 in. (5-6 mm) long. Petals are yellow, and 0.35-0.47 in. (9-12 mm) long. Flowering occurs from March to October.
- Fruits are linear, 0.8-2 in. (2-5 cm) long, and conical or subulate. Seeds are reddish brown to black in color, 0.04-0.08 in. (1-2 mm) in diameter.
- Ecological Threat
- Sinapis arvensis ssp. arvensis can be found in disturbed areas including grain fields, and orchards. It is native to Eurasia.
Images from Bugwood.org