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

	rootstocks creeping, very slender; NOT [rootstocks short, thick]
	petals pinnatifid or fringed; NOT [petals 3-cleft at the tip]
	petals greenish or yellow; NOT [petals white or purplish]
	stamens 10; not [stamens 5]

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

	herbs; NOT [shrubs]
	leaves shallowly to more or less deeply lobed; NOT [leaves deeply lobed or divided]
	sepals 5; NOT [sepals 4]
	petals present; NOT [petals absent]
	petals pinnatifid, fringed or 3-cleft; NOT [petals entire], NOT [petals 3- to 5- lobed]
	sterile stamens not present; NOT [bundles of sterile stamens (staminodia) alternating with stamens]
	stamens 5 or 10; NOT [stamens 2-8, mostly 4-7]

Saxifragaceae: 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]
	receptacle cup-shaped
	flowers with two floral rings
	calyx regular; NOT [calyx irregular, some sepals smaller than others]
	corolla regular in shape; NOT [corolla irregular in shape]
	each petal distinct from the others
	petals 5; NOT [petals 4]
	stamens 10 or fewer; NOT [stamens usually more than 10]
	ovary superior; NOT [ovary inferior]
	carpels 1 or 2; NOT [carpels 3 -5]