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 Leaf bases cordate to truncate; [coastal TX]
..2 Corollas 2.2-2.3 mm long; flowering late Jul-Nov; [widespread]
..2 Corollas 1.9-2.0 mm long; flowering Apr-Nov; [peninsular FL]