Stagger weed
Stachys arvensis
Annual herb to 35 cm high; branches densely covered with multicellular ± spreading hairs.
Leaves with lamina broad-ovate or broad-triangular, 1–4 cm long, 0.8–3.2 cm wide; apex subacute; base cordate or truncate, rarely cuneate; margins regularly toothed to crenate; petiole 0–3 cm long.
Inflorescence mostly 3-flowered per bract or leaf axil. Calyx 10-ridged, 5–7 mm long; lobes pointed and equal in length. Corolla 5–7 mm long; white or pale pink; tube as long as lower lobe.
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Plant Protection Products
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