Erysimum cheiranthoides.Leo Michels. luirig.altervista.org. Accessed 12/2014

Erysimum cheiranthoides is an annual or winter annual, erect 20-100 cm tall, often unbranched, stem leafy. 

Leaves alternate, linear, mostly entire, finely hairy. 

Flowers bright yellow, ca 0.8 cm wide, 4 petals, in a terminal raceme; blooms June- Aug.; self-fertile (autogamous), but with odor and visited by bees (Mulligan and Kevan 1973). 

Fruit dry, a linear pod ca 2 cm long held erect on thin stalk along elongated raceme, seeds brown, 0.1 Cm. 

Wetland status: FAC. 

Frequency in NYC: Recently extirpated (2001). 

Origin: Europe, now circumboreal, south to NC. 

Habitat: Moist or wet open areas.