Sisymbrium loeselii
Tall Hedge Mustard



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

stems hairy (at least near the base); NOT [stems hairless, with a pale, bluish-white coating]

leaves (at least some) > 4 mm wide; NOT [leaves <= 4 mm wide]

leaves all pinnatifid to pinnate; NOT [leaves all or mostly entire, very narrow]

upper stem leaves with 2-4 lanceolate to linear lateral lobes on each side, tipped with a much larger narrowly triangular lobe; NOT [upper stem leaves with (3) 4-6 (8)  linear to hair-like lobes on each side, terminal lobe not much larger or much different in shape than lateral ones]

pods spreading or ascending; NOT [pods closely appressed to the stem]

pedicels 1.25 cm long; NOT [pedicels more or less 0.5 cm long]

pedicels slender, much narrower than the pods; NOT [pedicels thick, more or less equal in width to the pods]

pods 2.5-4 cm long; NOT [pods 1-2 cm long],  NOT [pods 5-10 cm long]

pods linear, cylindrical; NOT [pods conical, awl or lance shaped]

pods beakless; NOT [pods beaked]

pods prominently veined; NOT [pods obscurely veined]


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

plants of dry habitats; NOT [plants of wet habitats]

hairs, when present, simple ; NOT [hairs attached at the middle, sessile, appressed, malpighian or stellate]

plants without stalked glands; NOT [plants with many-celled, stalked glands]

prominent cauline leaves present

cauline leaves singly pinnately divided or lobed, or with outward-pointed teeth; NOT [cauline leaves entire], NOT [cauline leaves bi- to tri-pinnately divided into many leaflets]

cauline leaves long attenuate at base; NOT [cauline leaves more or less clasping, auriculate or sagittate at base]

raceme without bracts; NOT [raceme with small leafy bracts at the base of most (or at least lower-most) flowers]

petals present; NOT [petals absent]

petals yellow

petals with veins of the same color intensity as the rest of the blade; NOT [petals with dark, purple or brown veins]

stigmas 2-lobed; NOT [stigmas undivided]

pods usually at least 4 times as long as wide; NOT [pods usually not more than 3 times as long as wide]

pods not compressed at right angles to the central partition; NOT [pods compressed at right angles to the central partition]

pods scarcely beaked; NOT [pods with a long, distinct beak]

pods splitting open lengthwise; NOT [pods breaking into segments]

seeds in 1 row; NOT [seeds in 2 rows]

seeds plump; NOT [seeds flat]


Cruciferae: 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]

flowers with two floral rings

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

sepals 4

corolla regular in shape; NOT [corolla irregular in shape]

each petal distinct from the others

petals 4

stamens 6, four long and two short

ovary superior; NOT [ovary inferior]

carpels 1 or 2