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.
Ground Vine.
Linnaea borealis. Honeysuckle Family. June - Aug.
A trailing vine, stems 6 - 20 inches long, found in moist, mossy woods. Labrador to New Jersey and mountains of Maryland, west to Minnesota; also far west.
Whitish, tinged and striped with crimson-pink, fragrant, slender bell-shaped, 5-lobed, borne in pairs, on stalk 3 - 4 inches high.
Opposite, rounded, scallop-toothed, evergreen.

Twin-flower.
 
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