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

	herbs; NOT [shrubs]
	plants with rootstocks and elongate stems; NOT [plants tufted or cushion-like]
	stems not twining; NOT [stems twining on vegetation]
	leaves palmately divided; NOT [leaves pinnately divided]
	leaflets 3 or rarely 1; NOT [leaflets more than 3]
	leaflets entire; NOT [leaflets finely toothed]
	the terminal leaflet normal; NOT [the terminal leaflet replaced by a tendril]
	leaves not glandular-dotted
	flowers in spikes or racemes; NOT [flowers solitary in the leaf axils]
	flowers all alike; NOT [upper flowers with petals, the lower ones apetalous]
	flowers 10-20 mm long; NOT [flowers about 4 mm long]
	flowers yellow
	keel not truncate; NOT [keel mostly truncate]
	pods 4-7 cm long; NOT [pods 2-4 cm long]
	pods sickle-shaped; NOT [pods straight]
	pods not segmented; NOT [pods usually with 3-5 one-seeded segments which separate at maturity]

Leguminosae: 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 with stipules; NOT [leaves without stipules, or having glands]
	flowers irregular in shape; NOT [flowers regular in shape]
	flowers with two floral rings
	calyx regular; NOT [calyx irregular, some sepals smaller than others]
	each petal distinct from the others
	corolla pea-like; NOT [corolla with one petal spurred or sac-like]
	stamens usually separate or partly so, not all in a column; NOT [stamens all united into a column]
	fruit a legume or loment; NOT [fruit a 3-valved capsule]