Sisymbrium loeselii

Family: Brassicaceae
Common Name: small tumbleweed mustard
Symbol: SILO3
Description: Annuals; densely hispid. Stems erect, branched distally. Basal leaves rosulate; oblanceolate, 2.5-8 cm - 20-50 mm, margins runcinate to lyrate-pinnatifid; lobes 2-4 on each side, much smaller than terminal lobe, margins entire or dentate. Cauline leaves similar to basal; blade entire or toothed. Fruiting pedicels divaricate or ascending, slender. Fruits (ascending to suberect), narrowly linear, curved or straight. Valleys, fields, roadsides, pastures, prairies, disturbed sites; 0-2400 m.