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.
Viper's Herb or Grass: Blue Thistle: Snake-flower: Blue Devil. Echium vulgare.
Borage Family. June - Sept.
A plant 12 - 30 inches high, with bristly, hairy, spotted stem, found in fields, waste places, along roadsides. Naturalized from Europe.
Variable purple, pink in the bud, 5 un-equal lobes, borne on a 1-sided spike, which is coiled at first, unrolling as the flowers expand..
Lance-shaped, hairy, mostly stemless.
 
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