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.
Culver's Physic:
Veronica virginica. Figwort Family. July - Aug.
An erect plant with straight, usually unbranched stem 2 - 7 feet high. Found in moist woods, meadows. Western Massachusetts and Connecticut to Manitoba and southward.
White or pale lavender, in dense, terminal spikes 3 - 6 inches long.
4 - 7, in whorls, lance-shaped, pointed, finely toothed.
 
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