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Herbs; sepals greenish Resedaceae
Leaves entire or with a few teeth towards the base, narrow-oblong to linear, 5–10 cm long, 5–15 mm wide. Flowers in a ± dense spike-like raceme. Sepals 4. Petals yellow, 4. Filaments persistent. Erect annual or biennial. S. Blue Mts Introd. from Europe. Fl. summer. Weld Reseda luteola