1. Stiffly branching Old World annual with pale yellow flowers; widely naturalized in North America; formerly used medicinally
   - Sisymbrium officinale

Derived forms: hedge mustards

Type of: herb, herbaceous plant

Part of: genus Sisymbrium

Encyclopedia: Hedge mustard

• buttercup squash
• butterfat
• Butterfield
• butterfingered
• butterfingers
• butterfish
• butterflower
• butterfly
• butterfly bush
• butterfly collector
• butterfly effect
• butterfly flower
• butterfly nut
• butterfly orchid
• butterfly orchis
• butterfly pea
• butterfly plant
• butterfly ray
• butterfly stroke
• butterfly valve
• butterfly weed
• butterfly-shaped
• butterflyfish
• butterhead lettuce
• buttermilk