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 Upper leaves pinnatifid; flowers creamy yellow or white (rarely pale blue)|
|1 Upper leaves entire to obscurely toothed; flowers blue-violet (rarely pink or whitish).|
|..2 Principal or median cauline leaves lanceolate to oblong, (2-) avg. 3 (-5)× as long as wide; leaf cuneate at the base|
..2 Principal or median cauline leaves ovate to ovate-oblong, (1.5-) avg. 2 (-2.5)× as long as wide; leaf broadly rounded at the base