Onobrychis: Answers to key questions in Flora of Alberta (FOA) leading to this genus. 

	herbs; NOT [shrubs]
	plants NOT climbing
	plants lacking tendrils; NOT [leaves with tendrils}
	leaves pinnate; NOT [leaves palmate]
	leaflets more than 3; NOT [leaflets 3 (rarely 1)]
	NOT [leaflets 5, pinnately arranged (the lower pair basal and resembling stipules)]
	leaves NOT glandular-dotted
	inflorescence NOT umbel-like
	calyx-lobes subulate, much longer than the tube
	flowers pinkish to red or purple; NOT [flowers yellow]
	keel not truncate; NOT [keel mostly truncate]
	fruit a legume; NOT [fruit a loment]
	fruit only slightly longer than wide
	fruit with short, stout spines
	fruit 1-seeded

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

	herbs; NOT [shrubs or trees]
	plants terrestrial or semi-aquatic; 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 with two floral rings, and with each petal distinct from the others]
	calyx regular; NOT [calyx irregular, some sepals smaller than others]
	flowers irregular in shape; NOT [flowers regular in shape]
	corolla pea-like; NOT [corolla with one petal spurred or sac-like]
	stamens usually separate or partly so, not in a column; NOT [stamens numerous, united into a column]
	fruit a legume; NOT [fruit a 3-valved capsule]