Lyrata: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 

	plants usually less than 3 dm tall; NOT [plants mostly well over 3 dm tall]
	plant tufted; NOT [plant slightly tufted]
	plants glabrous or only sparsely hirsute at base; NOT [plants hirsute at base]
	basal leaves (at least some) lyrate-pinnatifid; NOT [basal leaves entire]
	basal leaves NOT ciliate; NOT [basal leaves generally strongly ciliate]
	cauline leaves NOT auriculate; NOT [cauline leaves usually auriculate]
	flowers usually white or cream, sometimes pink to lavender-tinged
	pods erect or ascending; NOT [pods spreading or reflexed]
	pods flattened parallel to the partition; NOT [pods almost circular in cross section]
	pods less than 1.5 mm wide; NOT [pods generally more than 1.5 mm wide]
	seeds wingless or the wing less than 0.3 mm wide; NOT [seeds winged, the wing mostly over 0.3 mm wide]

Arabis: Answers to key questions in Budd's Flora  and Flora of Alberta leading to this genus. 

	NOT [stem 1-5 (10) cm tall, barely exceeding the leaves, generally scapose; fruit linear, more than 10 times longer than broad; plants glabrous]
	plants of drier habitats; NOT [plants aquatic or of marshy habitats]
	plants glabrous to more or less pubescent; NOT [plants densely grayish to silvery pubescent]
	plants more or less glabrous above; NOT [plants pubescent above]
	plants with pubescence mostly or entirely of branched hairs; NOT [plants glabrous, or the pubescence of simple hairs]
	leaves and stem usually with forked or starry hairs
	cauline leaves NOT pinnate
	cauline leaves, if any, NOT auriculate and clasping
	flowers much smaller; NOT [flowers 20-25 mm across]
	petals much shorter; NOT [petals 15-20 mm long]
	flowers white, sometimes tinged with pink or purple or purple veined; NOT [flowers pink, purple, or yellow]
	pods 20-40 mm long; NOT [fruit 5-11 mm long]
	pods 1.0-1.5 mm wide; NOT [fruit 1.5-2.5 mm wide]
	pods linear; NOT [fruits lanceolate to oblong]
	pods usually at least 4 times as long as wide; NOT [pods usually not more than 3 times as long as wide]
	pods strongly flattened; NOT [pods round or 4-angled in cross section]
	pods compressed parallel to the central partition; NOT [pods compressed at right angles to the central partition]
	fruits straight; NOT [fruits often twisted]
	pods NOT torulose
	pods NOT moniliform
	pods scarcely beaked; NOT [pods with a long, distinct beak]
	fruit nerveless; NOT [fruit prominently 1-nerved]
	central partition entire; NOT [central partition with an opening sometimes almost reduced to the margin]
	fruits dehiscent

Cruciferae: Answers to key questions in Budd's Flora  leading to this family. 

	herbs; NOT [shrubs or trees]
	plants terrestrial or semiaquatic; NOT [plants aquatic, leaves submerged or floating]
	plants NOT with colored milky juice
	plants with more than one normal leaf
	some or all leaves alternate; NOT [leaves opposite, whorled, or basal]
	leaves without stipules, or having glands; NOT [leaves with stipules]
	flowers with two floral rings, and with each petal distinct from the others
	calyx regular; NOT [calyx irregular, some sepals smaller than others]
	sepals 4
	corolla regular in shape; NOT [corolla irregular in shape]
	petals 4; NOT [petals5]
	stamens usually 6, four long and two short; NOT [stamens 6, of equal length], NOT [stamens usually more than 10]
	ovary superior; NOT [ovary inferior]
	carpels 1 or 2; NOT [carpels 3-5]