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 Flowers ascending or erect; corolla 1.5-4 (-5) cm long; leaves sparsely to densely pubescent on the lower surface
1 Flowers pendulous; corolla to 7 cm long; leaves glabrous or nearly so on the lower surface