Cheiranthoides:  Answers to key questions in Budd's Flora and Flora of Alberta leading to this species.   pubescence of leaves mostly of trifid hairs; NOT bifid hairs flowers yellow, NOT purple flowers smaller than 2-4 cm across petals 3-5 mm long; NOT 6-20 mm long stalks of seedpods almost half as long as pods; NOT less than one-quarter as long siliques 1-3 cm long; NOT 2-10 cm long

 

Erysimum: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus.  Note that there is almost a contradiction in the answers from Flora of Alberta (FOA) regarding whether the leaves are entire or not. plants more or less pubescent stem hairs attached by the middle, appressed leaves NOT oval to elliptical, NOT entire (FOA) leaves simple, entire or slightly toothed (FOA) basal leaves NOT lyrate-pinnatifid cauline leaves NOT cordate-clasping stem leaves entire to dentate, not lobed (BF) flowers yellow petals less than 7 mm long fruit pod-like (silique or silicle) pod dehiscent by 2 valves pods not compressed at right angles to the central partition pod more than 4 times as long as broad pod with a short slender beak or beakless seeds in 1 row in each locule seeds globose, ovoid or ellipsoid; NOT flattish

 

Cruciferae: Answers to key questions in Budd's Flora leading to this family. herbs plants terrestrial or semi-aquatic plants not with colored milky juice plants with more than one normal leaf leaves without stipules, or having glands some or all leaves alternate calyx regular 4 sepals corolla regular in shape 4 petals stamens usually 6, 4 long and 2 short ovary superior 1 or 2 carpels