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Scrophularia
See list of 3 species in this genus-
1a. Sterile filament yellow-green near the apex; capsules 6–10 mm long; pedicels 0.4–0.7 mm thick; leaf blades broad-cuneate to broad-rounded or truncate at the base
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1b. Sterile filament dark brown to purple-brown near the apex; capsules 4–7 mm long; pedicels 0.3–0.5 mm thick; leaf blades cordate to broad-rounded at the base
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2a. Leaf blades acute at the apex; petiole wing-margined, less than ⅓ as long as the blade; corolla 7–10 mm long
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2b. Leaf blades acuminate at the apex; petiole not or scarcely wing-margined, ⅓ to ½ as long as the blade; corolla 5–8 mm long
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Each photo represents one species in this genus.