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

	no bulblets in axils of leaves; NOT [bulblets in axils of upper leaves]
	leaflets lanceolate, length-to-width ratio about 5:1; NOT [leaflets very narrowly lanceolate, length-to-width ratio 10:1 or more; NOT [leaflets linear]
	vein enclosures of the lower leaf-surface squarish; NOT [vein enclosures of the lower leaf-surface elongate-rectangular]
	fruit usually longer than broad; NOT [fruit usually about as long as broad or broader]
	fruit not constricted or abruptly and unevenly constricted at the commissure; NOT [fruit gradually and evenly constricted along the commissure]

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

	plants with tuberous roots; NOT [plants with a taproot]
	plants generally more than 5 dm tall
	stem not purple-blotched
	NOT [plants with a bluish tinge; flowers in dense globose heads; bracts spiny]
	NOT [foliage spiny]
	NOT [leaves usually trifoliolate, leaflets palmate, 10-30 cm wide]
	NOT [leaves palmate with 5-7 large leaflets]
	leaves 1-3 times pinnate or pinnate-ternate
	leaves often with 5 or more primary segments and many leaflets
	leaves divided into leaflets of unequal size; NOT [leaves divided into leaflets of about equal size]
	leaflets finely to deeply serrate; NOT [leaflets entire or with a few lobes]
	the central  flower pedicellate; NOT [the central flower in the umbellets sessile]
	flowers white; NOT [flowers yellow]
	fruit not spiny; NOT [fruit covered with short, hooked spines]
	fruit less than 1 cm long; NOT [fruit more than 1 cm long]
	fruit about as long as broad or slightly longer; NOT [fruit twice as long as broad or longer]
	fruit oblong to elliptical; NOT [fruit linear to clavate]
	fruit flattened but wingless; NOT [fruit strongly flattened, broadly winged]
	fruits flattened laterally (parallel to the styles); NOT [fruits flattened dorsally (at right angles to the styles)]
	fruit glabrous; NOT [fruit usually pubescent]

Umbelliferae: 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
	stems hollow
	plants with more than one normal leaf
	some or all leaves alternate; NOT [leaves opposite, whorled, or basal]
	leaves without stipules but usually possessing sheathing petioles
	flowers in umbels
	parts of flowers mostly in fives; NOT [parts of flowers in twos or fours]
	flowers with two floral rings
	calyx regular; NOT [calyx irregular, some sepals smaller than others]
	each petal distinct from the others
	stamens 10 or fewer; NOT [stamens usually more than 10]
	styles 2; NOT [styles 5]
	ovary inferior; NOT [ovary superior]