Erysimum cheiranthoides

taxobox
name = "Erysimum cheiranthoides"

---

regnum = Plantae
unranked_divisio = Angiosperms
unranked_classis = Eudicots
unranked_ordo = Rosids
ordo = Brassicales
familia = Brassicaceae
genus = "Erysimum"
species = "E. cheiranthoides"
binomial = "Erysimum cheiranthoides"
binomial_authority = L.
synonyms = "Cheirinia cheiranthoides"|

"Erysimum cheiranthoides" (Treacle-mustard) is a species of "Erysimum" native to most of central and northern Europe and northern and central Asia.Flora Europaea: [http://rbg-web2.rbge.org.uk/cgi-bin/nph-readbtree.pl/feout?FAMILY_XREF=&GENUS_XREF=Erysimum&SPECIES_XREF=cheiranthoides&TAXON_NAME_XREF=&RANK= "Erysimum cheiranthoides"] ] Blamey, M. & Grey-Wilson, C. (1989). "Flora of Britain and Northern Europe". ISBN 0-340-40170-2] Flora of China: [http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200009522 "Erysimum cheiranthoides"] ]

It is a herbaceous annual plant similar in appearance to many other mustards, growing an erect stem 15–100 cm (rarely 150 cm) tall. The leaves are lanceolate to elliptic, 2–11 cm long and 0.5–1 cm broad, with an entire to coarsely toothed margin. The flowers are bright yellow, 5–12 mm diameter, produced in an erect inflorescence. The fruit is a slender cylindrical capsule 1–3 cm (rarely 5 cm) long, containing several small, dark brown seeds.Flora of NW Europe: [http://ip30.eti.uva.nl/BIS/flora.php?selected=beschrijving&menuentry=soorten&id=2276 "Erysimum cheiranthoides"] ]

It is widely naturalised outside of its native range, including in western and southern Europe, [Med-Checklist: [http://ww2.bgbm.org/mcl/PTaxonDetail.asp?NameId=24081&PTRefFK=1275 "Erysimum cheiranthoides"] ] and North America. [USDA Plants Profile: [http://plants.usda.gov/java/profile?symbol=ERCH9&mapType=nativity&photoID=erch9_001_ahp.tif "Erysimum cheiranthoides"] ]

References