Macrocarpum: Answers to key questions in Budd's Flora (BF)  and Flora of Alberta (FOA) leading to this species. 

	root NOT bulbous
	stems usually with at least one pair of leaves near the base; NOT [stems leafless or with a single leaf at the base]
	stems densely pubescent; NOT [stems glabrous]
	foliage more or less densely pubescent; NOT [foliage puberulent]
	leaves much divided; NOT [leaves divided into a few elongate, linear segments]
	bractlets lanceolate, widest at base; NOT [bractlets oblanceolate]
	ovary glabrous; NOT [ovary densely puberulent]
	fruit glabrous; NOT [fruit densely puberulent]

Lomatium: Answers to key questions in Budd's Flora (BF)  and Flora of Alberta (FOA) leading to this genus.  Note that these items do not all apply to all species of Lomatium found on the Canadian prairies, but they all do apply to this species.

	plants less than 3 dm tall, usually 1-2 dm; NOT [plants more than 3 dm tall]
	plants NOT with a bluish tinge
	foliage NOT spiny
	plants scapose; NOT [plants with stem leaves]
	lowest leaves (and the upper) compound; NOT [lowest leaves simple]
	leaves much divided, with leaflets or segments numerous; NOT [leaves simple or divided into few well-developed leaflets], NOT [leaves once pinnate], NOT [leaves palmate with 5-7 large leaflets], NOT [foliage digitately compound], NOT [leaves usually trifoliolate; leaflets palmate, 10-30 cm wide]
	plants lacking axillary bulblets; NOT [plants with axillary bulblets largely replacing flowers]
	inflorescence NOT bluish
	NOT [flowers in dense globose heads with spiny bracts]
	umbel compound; NOT [umbel simple]
	umbel many-flowered; NOT [umbel few-flowered]
	involucral bracts small, slightly or not dissected; NOT [involucral bracts large, pinnately dissected]
	flowers yellow
	fruits more than 5 mm long; NOT [fruits 3-4 mm long]
	fruit oblong to elliptical; NOT [fruit linear to clavate]
	fruit generally 3 times as long as broad or less; NOT [fruit several times longer than broad]
	fruits flattened dorsally (at right angles to the styles); NOT [fruits more or less rounded in cross-section]
	fruit winged; NOT [fruit wingless]
	fruit winged on the marginal nerves only; NOT [fruit conspicuously winged on marginal and dorsal nerves]
	fruit NOT spiny; NOT [fruit covered with short, hooked spines]

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, or having glands; NOT [leaves with stipules]
	flowers in umbels
	parts of flowers mostly in fives; NOT [parts of flowers in twos or fours]
	flowers with two floral rings, and with each petal distinct from the others
	calyx regular; NOT [calyx irregular, some sepals smaller than others]
	stamens 10 or fewer; NOT [stamens usually more than 10]
	styles 2; NOT [styles 5]
	ovary inferior; NOT [ovary superior]