Sium suave
 
Water-Parsnip

Later Leaflet Bottom

Ruby Lake, Near Hudson Bay
20-July-2019

This leaflet is from one of the later growing leaves.  Note the leaflet is narrow and serrate.

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Sium: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus. 
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NOT [plants with a bluish tinge; flowers in dense globose heads; bracts spiny]

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NOT [leaves usually trifoliolate; leaflets palmate, 10-30 cm wide]

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foliage not spiny

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leaves (including lowest) divided into a few well-developed leaflets; NOT [leaves much divided, with leaflets or segments numerous];  NOT [leaves simple]

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leaves once pinnately divided, with more than 3 leaflets per leaf; NOT [leaves 2 or more times pinnate], NOT [foliage digitately compound]

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leaflets more than 2 mm wide; NOT [leaflets mostly 1-2 mm wide]

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leaflets linear to lanceolate, much longer than broad; NOT [leaflets elliptic to ovate to oblong in outline, twice as long as broad or less]

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leaflets serrate; NOT [leaflets entire]

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plants lacking axillary bulblets; NOT [plants with axillary bulblets largely replacing flowers]

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flowers white; NOT [flowers yellow]

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inflorescence not bluish

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fruit 2-3 mm long; NOT [fruit about 2 mm long], NOT [fruit 5-6 mm long]

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fruit generally 3 times as long as broad or less; NOT [fruit several times longer than broad]

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fruit oblong to elliptical; NOT [fruit linear to clavate]

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fruit not spiny; NOT [fruit covered with short, hooked spines]

 

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Umbelliferae: Answers to key questions in Budd's Flora leading to this family. 
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plants terrestrial or semiaquatic; NOT [plants aquatic, leaves submerged or floating]

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herbs; NOT [shrubs or trees]

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plants not with colored milky juice

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stems hollow

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plants with more than one normal leaf

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some or all leaves alternate; NOT [leaves opposite, whorled, or basal]

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leaves without stipules, or having glands; NOT [leaves with stipules]

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flowers in umbels

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parts of flowers mostly in fives; NOT [parts of flowers in twos or fours]

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flowers with two floral rings

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calyx regular; NOT [calyx irregular, some sepals smaller than others]

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each petal distinct from the others

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stamens 10 or fewer; NOT [stamens usually more than 10]

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styles 2; NOT [styles 5]

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ovary inferior; NOT [ovary superior]