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.
| 1 Corolla 0.5-0.8 cm long; leaves 1-2 cm long; plants 10-20 cm tall |
| 1 Corolla 2.5-4 cm long; leaves 3-5 cm long; plants 15-50 cm tall |