Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.
Click images to enlarge and show more photo credit.
Key to Scrophularia
Scrophulariaceae
Scrophularia
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=40435
1 Staminode (hidden under the upper corolla lip) yellowish-green (often drying darker), usually wider than long and the tip fan-shaped; leaf serrations coarse, often > 3 mm long; flowering May-early Jul; capsule 6-10 mm long, tapered at the tip, the surface dull at maturity
1 Staminode dark purple or brownish, usually longer than wide; leaf serrations fairly fine, < 3 mm long; flowering mid Jul-Oct; capsule 4-7 mm long, broadly tapered at the tip, the surface often shiny at maturity