Flowers and leaves. Photo: Jose Maria Escolano, Spain

Plants. Photo: Kurt Kulac, unknown place, probably Germany

Painting. Janus Kops and FW van Eeden, Flora Batava. Afbeelding en Beschrijving der Nederlandsche Gewassen. XVIII. Deel. (1889)

Common Name

Hedge Mustard, Indian Hedge Mustard, Wild Mustard

Family

Brassicaceae

Notes

Introduced annual or biennial forb to 1.3m tall.  Basal leaves not persisting, to 11cm long, flat, hairy, lobed.  Stem leaves flat, hairy, edges entire or lobed.  Flowers yellow, with 4 petals, in groups at the tops of the stems, which elongate as the fruiting bodies mature.

Differs from Sisymbrium erysimoides and Sisymbrium irio  in that the petals are 6-10mm long, and the stem leaves are usually undivided.

Description and photo in G.M. Cunningham, WE Mulham, PL Milthorpe and J H Leigh (1981 and later printings) Plants of Western New South Wales page 335.  Differences between species of Sisymbrium are detailed under Sisymbrium altissimum page 333.

PlantNET description: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Sisymbrium~orientale

FloraBase photos:  http://florabase.dpaw.wa.gov.au/browse/photo/3072