This section is from the book "Who's Who Among The Wild Flowers", by W. I. Beecroft. Also available from Amazon: A Field Guide to Edible Wild Plants.
Gerardia flava. Figwort Family. July - Aug.
A plant 2 - 4 feet tall, found in open woods. New England to Gulf States, west to Ontario and Wisconsin, Iowa, Arkansas.
Yellow, trumpet-shaped, 5-lobed.
Opposite, lower ones more or less irregularly lobed and toothed. Plant stem and leaves downy.
G. virginica. Flowers slightly larger than those of preceding. Lower leaves deeply cut and toothed. Whole plant smooth.

Downy False Foxglove.
 
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