PINNATE TANSY-MUSTARD
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Descurainia pinnata   (Walt. ) Britton
Jewell County, Kansas
Annual
Height: 4-36 inches
Family: Brassicaceae - Mustard Family
Flowering Period:   March, April, May, June, July, August
Stems: Erect, simple or branched, pubescent to canescent with branched glandular and eglandular hairs.
Leaves: Basal and cauline, alternate. Basal leaves: petiole .2 to 1.6 inch; blade ovate to oblong or oblanceolate in outline, .4 to 6 inches, margins 1-2-pinnately lobed, lobes entire or dentate, surfaces sparsely to densely pubescent. Cauline leaves: petiole present or absent; blade usually 1-pinnately lobed, surfaces pubescent.
Inflorescences: Racemes, terminal, usually with glandular hairs.
Flowers: Sepals 4, oblong to elliptic, 1/25 to 1/10 inch; petals 4, yellow, oblanceolate, 1/25 to 1/8 inch; stamens 6, 4 long stamens barely exserted, 2 short stamens included.
Fruits: Fruiting pedicels spreading to ascending, straight or slightly recurved. Siliques ascending to erect, clavate, 1/4 to 2/5 inch; seeds reddish brown, in 2 rows in each locule, oblong.
Habitat: Roadsides, pastures, disturbed sites in prairie and woodlands, and waste places
Distribution: Occurs statewide
Origin: Native
Uses: Native Americans used the seeds for food and the leaves as potherbs.
Comments: Named for Francois Descurain, French botanist.
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