Brassica juncea

 
Indian Mustard

G.F. Ledingham Herbarium
University of Regina

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Juncea:  Answers to key questions in Budd's Flora and Flora of Alberta leading to this species.
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plants glabrous or nearly so

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plants glaucous

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upper stem leaves cuneate at the base, not clasping

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pedicels slender, elongate, spreading

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siliques 2-5 cm long, loosely ascending

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each valve with a prominent midvein, the other nerves weaker and scarcely parallel

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beak of silique slender, terete or conical, not 2-edged

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beak seedless

 
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Brassica: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus.
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leaves dentate or divided, not entire

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leaves NOT: oval to elliptical, entire, the cauline cordate-clasping

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petals yellow

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petals mostly 7-12 mm long

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fruit pod-like (silique or silicle), dehiscent by 2 valves

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pods circular in cross section; not flattened

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pods NOT compressed at right angles to the central partition

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pods usually more than 4 times as long as broad

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pods opening by  valves, not constricted between seeds

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pods with a long, elongated, stout beak

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beak joint of capsule seedless

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beak of pod and the body equal in cross section

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seeds in 1 row in each locule

 
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Cruciferae: Answers to key questions in Budd's Flora leading to this family.
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herbs

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plants terrestrial or semi-aquatic

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plants not with colored milky juice

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plants with more than one normal leaf

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leaves without stipules, or having glands

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some or all leaves alternate

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calyx regular

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4 sepals

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corolla regular in shape

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4 petals

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stamens usually 6, 4 long and 2 short

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ovary superior

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1 or 2 carpels