Citation: L., Sp. Pl. 668 (1753).

Synonymy: Brassica sinapis Vis., Fl. Dalm. 3:136 (1852), nom. illegit.; B. sinapistrum Boiss., Voy. Bot. Espagne 2:39 (1839).

Common name: Charlock.

Description:
Annual herbs, simple or branched, erect, 30-80 cm tall, usually hispid; basal leaves lyrate, dentate, to 20 cm long; upper leaves reducing.

Sepals 4-7 mm long; petals 9-12 mm long, yellow.

Siliqua terete, 2.5-5.5 cm long, 2-4 mm wide; beak conical, straight, to 15 mm long, often 1-seeded; valves glabrous or hispid, 3- or 5-veined, contracted between the seeds; seeds globose, 1-2 mm wide, 6-12 per locule.

	Sinapis arvensis
Image source: fig 221g in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).

Published illustration: Beadle (1972) Student's Flora of north-eastern New South Wales 2:fig. 61; Hewson (1982) Fl. Aust. 8: fig. 46F; Cunningham et al. (1982) Plants of western New South Wales, p. 333.

Distribution:  An uncommon weed of cultivation. S.Aust.: NL, SL, KI, SE.   W.Aust.; N.T.; Qld; N.S.W.; Vic.; Tas.   Native to Europe, North Africa and Asia. Conservation status: naturalised Flowering time: Aug. — Dec.

SA Distribution Map based on current data relating to specimens held in the State Herbarium of South Australia

Biology: No text

Author: Not yet available